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Periactin (Cyproheptadine)

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Generic Periactin is used to relieve cold- and allergy-related symptoms such as hay fever, nasal inflammation, stuffy nose, red and inflamed eyes, hives, and swelling. Generic Periactin is approved by FDA. Generic Periactin blocks the effects of the naturally occurring chemical histamine in your body.

Other names for this medication:

Similar Products:
Atarax, Phenergan, Flonase, Allegra


Also known as:  Cyproheptadine.


Generic Periactin is used to treat fever, nasal inflammation, stuffy nose, red and inflamed eyes, hives, swelling and other symptoms of cold and allergy.

Generic Periactin blocks the effects of the naturally occurring chemical histamine in your body.

Periactin is also known as Cyproheptadine, Ciplactin, Periactine, Ciproral.

Generic name of Generic Periactin is Cyproheptadine.

Brand name of Generic Periactin is Periactin.


Generic Periactin can be taken in tablets (4mg) and syrup. You should take it by mouth.

Take Generic Periactin by mouth with or without food.

Measure the syrup form of Generic Periactin with a special dose-measuring spoon or cup.

If you want to achieve most effective results do not stop taking Generic Periactin suddenly.


If you overdose Generic Periactin and you don't feel good you should visit your doctor or health care provider immediately. Symptoms of Generic Periactin overdosage: extreme sleepiness, confusion, weakness, ringing in the ears, blurred vision, large pupils, dry mouth, flushing, fever, shaking, insomnia, hallucinations, seizure.


Store at room temperature between 15 to 30 degrees C (59 to 86 degrees F) away from moisture and heat. Keep container tightly closed. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

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The most common side effects associated with Periactin are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not take Generic Periactin if you are allergic to Generic Periactin components.

Try to be careful with Generic Periactin if you're pregnant or you plan to have a baby, or you are a nursing mother. Generic Periactin can harm your baby.

Do not take cyproheptadine if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate) in the last 14 days.

Be careful in taking Generic Periactin if you have glaucoma or pressure in the eye, stomach ulcer, enlarged prostate, bladder problems, difficulty urinating, hyperthyroidism, hypertension, any problems with heart, asthma.

Be careful with taking Generic Periactin if you use anxiety or sleep medicines such as alprazolam (Xanax), diazepam (Valium), chlordiazepoxide (Librium), temazepam (Restoril), or triazolam (Halcion); anti-depression medications such as amitriptyline (Elavil), doxepin (Sinequan), nortriptyline (Pamelor), fluoxetine (Prozac), sertraline (Zoloft), or paroxetine (Paxil); any other medications that make you feel drowsy, sleepy, or relaxed.

Avoid machine driving while taking Generic Periactin.

Avoid alcohol.

Do not stop taking Generic Periactin suddenly.

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Evaluations of MTSS, MNW, and pruritus revealed statistically significant differences at week 3 compared with baseline in the cetirizine group. However, greater reductions in these parameters were obtained with rupatadine. In patients receiving rupatadine, reductions in the MNW, size of wheals, and intensity of erythema were also significant at six weeks (P < 0.001) and were significantly greater than those in the cetirizine group (P < 0.05).

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We describe two cases of fixed drug eruptions induced by pheniramine (1(st) case) and loratadine (2(nd) case).

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These findings indicate that fluoxetine reduced RA in DBA/2 mice at doses that did not reduce seizure severity. Because DBA/2 mice are a proposed model for human SUDEP, these data support evaluation of fluoxetine for SUDEP prevention in the patient population most susceptible to SUDEP. The data raise concern about the use of serotonin antagonists in this patient population.

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Several drugs for the treatment of perennial allergic rhinitis and its symptoms have been investigated since some years ago. These drugs are: steroidal-type immunoregulators, immunotherapy and antihistamines. Because of first generation of the last ones originated several side effects, pharmacological research was oriented to the search of formulas with the same of higher efficacy, but with fewer effects on central nervous system.

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A systematic study of a large number of compounds from various pharmacological classes was performed to better define their interaction with the cholinergic nervous system. An 'in vivo' test procedure called 'physostigmine antagonism' in rats was used; it involved the administration of the test compounds, measurement of the pupil diameter and recording of the survival time after injection of a lethal dose of physostigmine. Known peripherally acting anticholinergics, such as isopropamide and methylscopolamine did not protect from physostigmine lethality at doses up to more than 150 times the mydriatic dose. Known centrally acting anticholinergics, such as dexetimide and benztropine, protected from lethality at doses equal to or slightly higher than the mydriatic dose. Penetration into the brain of a muscarinic blocking agent thus appeared to be a sufficient condition to significantly reduce the cholinergic overstimulation of the CNS that results from inhibition of acetylcholine hydrolysis. Drugs of other pharmacological classes that are known to have anticholinergic activity in addition to their more characteristic action, were also active in the physostigmine test. They include most of the tricyclic antidepressants, some antihistamines such as diphenhydramine and cyproheptadine, some ganglion blocking agents such as mecamylamine and the neuroleptic clozapine. Drugs with hypnotic or anticonvulsant properties, sedative neuroleptics and high doses of some members of other pharmacological classes protected from physostigmine-induced lethality by a mechanism not based on anticholinergic activity. The results further show that a number of pharmacological actions: dopamine, histamine H1 and serotonin S2 antagonism, MAO-inhibition, alpha-adrenergic blockade etc. are all insufficient to produce physostigmine antagonism.

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We report the discovery, tissue distribution and pharmacological characterization of a novel receptor, which we have named H4. Like the three histamine receptors reported previously (H1, H2, and H3), the H4 receptor is a G protein-coupled receptor and is most closely related to the H3 receptor, sharing 58% identity in the transmembrane regions. The gene encoding the H4 receptor was discovered initially in a search of the GenBank databases as sequence fragments retrieved in a partially sequenced human genomic contig mapped to chromosome 18. These sequences were used to retrieve a partial cDNA clone and, in combination with genomic fragments, were used to determine the full-length open reading frame of 390 amino acids. Northern analysis revealed a 3.0-kb transcript in rat testis and intestine. Radioligand binding studies indicated that the H4 receptor has a unique pharmacology and binds [(3)H]histamine (K(d) = 44 nM) and [(3)H]pyrilamine (K(d) = 32 nM) and several psychoactive compounds (amitriptyline, chlorpromazine, cyproheptadine, mianserin) with moderate affinity (K(i) range of 33-750 nM). Additionally, histamine induced a rapid internalization of HA-tagged H4 receptors in transfected human embryonic kidney 293 cells.

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Flavonoids, coumarins and other polyphenolic compounds are powerful antioxidants both in hydrophilic and lipophylic environments with diverse pharmacological properties including anti-inflammatory activity. Despite being widely used as powerful therapeutic agents for blood coagulation disorders, more specifically to control some serine protease enzymes, the mechanism of anti-inflammatory activity of coumarins is unknown, unlike that of flavonoids. Although their controlling effect on serine proteases is well acknowledged, their action on secretory phospholipase A2 (sPLA2) remains obscure. The present study describes the interaction between umbelliferone (7-HOC) and the sPLA2 from Crotalus durissus collilineatus venom. In vitro inhibition of sPLA2 enzymatic activity by 7-HOC was estimated using 4N3OBA as substrate, resulting in an irreversible decrease in such activity proportional to 7-HOC concentration. The biophysical interaction between 7-HOC and sPLA2 was examined by fluorescent spectral analysis and circular dichroism studies. Results from both techniques clearly showed that 7-HOC strongly modified the secondary structure of this enzyme and CD spectra revealed that it strongly decreased sPLA2 alpha-helical conformation. In addition, two-dimensional electrophoresis indicated an evident difference between HPLC-purified native and 7-HOC-treated sPLA2s, which were used in pharmacological experiments to compare their biological activities. In vivo anti-inflammatory activity was assessed by the sPLA2-induced mouse paw edema model, in which 7-HOC presented an effect similar to those of dexamethasone and cyproheptadine against the pro-inflammatory effect induced by native sPLA2 on the mouse paw edema, mast cell degranulation and skin edema. On the other hand, 7-HOC exhibited a more potent inhibitory effect on sPLA2 than that of p-bromophenacyl bromide (p-BPB). Our data suggest that 7-HOC interacts with sPLA2 and causes some structural modifications that lead to a sharp decrease or inhibition of the edematogenic and myotoxic activities of this enzyme, indicating its potential use to suppress inflammation induced by sPLA2 from the snake venom.

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Adverse cardiac effects have been related to the use of H1-receptor antagonists terfenadine and astemizole.

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Data from a national pharmacy benefit management organization covering lives throughout the United States were used. The analysis included a comparison of the before and after change in prescription utilization and cost for plan sponsors that instituted 1 of 3 second-generation antihistamine (SGA) benefit responses: made no change, moved SGAs to the third tier, or restricted SGA benefits through a requirement for prior authorization. Multivariate regression analysis was used to control for differences across the study groups.

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The local anesthetic effect of cyproheptadine on nerve fibres in the rabbit's cervical vagus and sciatic nerve was studied by the single sucrose-gap technique. Local anesthetics such as procaine and tetracaine, and an antihistaminic with local anesthetic activity, diphenhydramine, were studied for comparison. Increasing concentrations of cypropheptadine, starting from 5 x 10(-5) M, produced a dose-related fall in the amplitude of the compound action potential of the vagus nerve without significant change in the resting membrane potential. A complete reversibility of the local anesthetic effect was difficult or impossible to obtain when doses greater than 1 x 10(-4) M were used. Cyproheptadine was more potent than procaine and diphenhydramine, and less potent than tetracaine in producing nerve conduction block. Frequency-dependent block was observed with cyproheptadine and the other agents at frequencies that can be considered low (1--5 Hz). Myelinated fibres of the sciatic nerves were also blocked by cyproheptadine within the same range of concentrations (1 x 10(-4) to 1 x 10(-3) M). Our results provide an additional explanation for the mechanism underlying the actions of cyproheptadine as an antiarrhythmic and an antipruritic agent.

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The serotonergic dependence of mu and kappa opioid analgesia was compared in the mouse tail-flick and hot-plate assays using morphine and the selective kappa agonist, U-50, 488H, respectively. Depletion of serotonin with p-chlorophenylalanine resulted in a marked antagonism of U-50,488H analgesic potency in both assays, as did reserpine pretreatment. Both of these effects were dose-related and the latter was reversed by treatment with the serotonin precursor, 5-hydroxytryptophan. Several reputed serotonin antagonists (cyproheptadine, ketanserin and pirenperone) also antagonized U-50,488H analgesia. In contrast, the analgesic potency of morphine was only decreased slightly by p-chlorophenylalanine and reserpine, and not at all by the serotonin antagonists. Thus, kappa, but not mu, analgesia is strongly dependent upon serotonergic mechanisms in these assays. However 5-hydroxytryptophan did not enhance U-50,488H analgesia in nonpretreated mice or in mice made tolerant to U-50,488H. Likewise, it did not alter the development of U-50,488H tolerance. On this basis it appears that kappa opioid tolerance is not due to serotonergic hypofunction.

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A haemorrhagic protein toxin (SA-HT) was isolated and purified from the spine extract of the Indian venomous butterfish, S. argus Linn, by two step ion exchange chromatography. The toxin was homogeneous in native and SDS-PAGE gel. SDS-molecular weight of the toxin was found to be 18.1 +/- 0.09 kDa. SA-HT produced severe haemorrhage on stomach wall but devoid of cutaneous haemorrhage. UV, EDTA, trypsin, protease, cyproheptadine, indomethacin, acetylsalicylic acid and BW755C treatment significantly antagonized the haemorrhagic activity of SA-HT. The toxin produced dose and time dependent oedema on mice hind paw, which was significantly encountered by cyproheptadine, indomethacin and BW755C. SA-HT increased capillary permeability on guinea pig dorsal flank. On isolated guineapig ileum, rat fundus and uterus, SA-HT produced slow contraction which was completely antagonised by prostaglandin blocker SC19220. On isolated rat duodenum, SA-HT produced slow relaxation. SA-HT significantly increased plasma plasmin, serum MDA level and decreased serum SOD level indicating the possible involvement of cyclooxygenase and lipooxygenase pathway.

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Animals in which 5,7-dihydroxytryptamine (5,7-DHT) was bilaterally injected into the median forebrain bundle (MFB) and sham lesioned animals were allowed access to an apparatus which delivered, upon lever pressing, intravenous D-amphetamine injections. MFB lesioned rats achieved stable self-injections patterns and self-administered more drug per test session than controls. A number of agents known to either directly or indirectly affect 5-hydroxytryptamine (5-HT) receptor function were administered prior to D-amphetamine access. The responses to these pretreatments in lesioned vs non-lesioned rats were markedly different. Pretreatment with L-tryptophan reduced the number of D-amphetamine self-injections in sham lesioned rats but had no effect in MFB lesioned animals. Fluoxetine pretreatment, likewise, reduced responding in non-lesioned rats and had no observable effect in lesioned animals. Quipazine markedly reduced self-injection in control rats but was not evaluated in the lesioned group. The putative 5-HT antagonists utilized, cyproheptadine and methysergide, unpredictably reduced self-injection frequency of non-lesioned animals in a dose related manner. When MFB lesioned animals were pretreated with cyproheptadine, rapid bursts of lever pressing were observed and 3 of 6 animals thus treated died as a result (presumably amphetamine overdose). In the remaining animals, methysergide produced a similar marked increase in self-injection rate. While these data may suggest that, in some instances, non-serotonergic mechanisms are involved, for the most part it would appear that 5-HT containing neurons are of major import in some aspect of D-amphetamine self-administration.

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To study the potentiation of chloroquine activity and mechanism by ketotifen and cyproheptadine in in vitro cultured Plasmodium falciparum Fcc SM1/yN strain.

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Coadministration of thalidomide, cyproheptadine or diclofenac has been shown to increase the area under the plasma concentration-time curve (AUC) of the novel antitumour agent 5,6-dimethylxanthenone-4-acetic acid (DMXAA) in mice. The aim of this study was to further investigate these pharmacokinetic DMXAA-drug interactions in the rat model.

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The characteristics of [3H]-d-cis-diltiazem binding sites in cardiac sarcolemmal membrane of rats and effects of diltiazem and cyproheptadine (Cyp) on these binding sites were studied. [3H]-d-cis-diltiazem, a benzothiazepine calcium antagonist, was shown to be bound to crude cardiac sarcolemmal membrane of rats in a specific and saturable manner with a KD = 84 nmol.L-1 and a receptor site density (maximum binding) of 0.279 protein-1. Diltiazem and Cyp, an antiserotonin-antihistaminic agent with calcium channel blocker activity, was found to completely inhibit the binding with Ki values of 102 nmol.L-1 and 5.5 mumol.L-1, respectively. The results demonstrate the existence of [3H]-d-cis-diltiazem binding sites in cardiac sarcolemmal membrane of rats and also suggest that the calcium channel blocker activity of Cyp on cardiac cells may be related, at least in part, to its binding to the [3H]-d-cis-diltiazem binding sites in cardiac sarcolemmal membranes.

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This study has demonstrated that both desloratadine alone and desloratadine plus montelukast administered once daily yield improvements with respect to the baseline assessment, regarding the suppression of the dermographometer challenge test papule and clinical improvement of urticaria. However, the combination of desloratadine and montelukast was shown to be more efficacious and may therefore be proposed in patients with DPU, in order to avoid corticosteroid therapy.

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This was a randomized, double-blind, parallel, double-dummy study conducted over 2 days in spring allergy season at outdoor parks in San Diego and Iowa City. Study medication was administered at 10:00 AM on both days. After screening, eligible patients completed rhinitis symptom diaries in the park hourly from 7:30 to 9:30 AM (baseline); at 10:30 AM and hourly from 11:00 AM to 4:00 PM (period I); at 6:00, 8:00, and 10:00 PM at home (period II); and the next day in the park hourly from 8:00 to 10:00 AM (period III), and from 11:00 AM to 4:00 PM (period IV). Major and total symptom complex scores, global efficacy and overall satisfaction, and adverse events were assessed.

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Investigations were carried out on the interactions of the hallucinogenic drug, D-lysergic acid diethylamide (D-LSD), and other serotonin antagonists with catecholamine-sensitive adenylate cyclase systems in cell-free preparations from different regions of rat brain. In equimolar concentration, D-LSD, 2-brono-D-lysergic acid diethylamide (BOL), or methysergide (UML) strongly blocked maximal stimulation of adenylate cyclase activity by either norepinephrine or dopamine in particulate preparations from cerebral cortices of young adult rats. D-LSD also eliminated the stimulation of adenylate cyclase activity of equimolar concentrations of norepinephrine or dopamine in particulate preparations from rat hippocampus. The effects of this hallucinogenic agent on adenylate cyclase activity were most striking in particulate preparations from corpus striatum. Thus, in 10 muM concentration, D-LSD not only completely eradicated the response to 10 muM dopamine in these preparations but also consistently stimulated adenylate cyclase activity. L-LSD (80 muM) was without effect. Significant activation of striatal adenylate cyclase was produced by 0.1 muM D-LSD. Activation of striatal adenylate cyclase of either D-LSD or dopamine was strongly blocked by the dopamine-blocking agents trifluoperazine, thioridazine, chlorpromazine, and haloperidol. The stimulatory effects of D-LSD and dopamine were also inhibited by the serotonin-blocking agents, BOL, 1-methyl-D-lysergic acid diethylamide (MLD), and cyproheptadine, but not by the beta-adrenergic-blocking agent, propranolol. However, these serotonin antagonists by themselves were incapable of stimulating adenylate cyclase activity in the striatal preparations. Several other hallucinogens, which were structurally related to serotonin, were also inactive in this regard, e.g., mescaline, N,N-dimethyltryptamine, psilocin and bufotenine. Serotonin itself produced a small stimulation of adenylate cyclase activity in striatal preparations and, in relatively high concentration (100 muM), partially blocked the activation by 10 muM dopamine, but was without effect on the stimulation by 10 muM D-LSD. The present results indicate that serotonin antagonists, in general, are potent inhibitors of catecholamine-induced stimulation of adenylate cyclase systems in brain cell-free preparations. In addition, these results, coupled with earlier findings on the capacity of D-LSD to interact with serotonin-sensitive adenylate cyclase systems from rat brain23,24 and other neural systems16, strongly suggest that this hallucinogenic agent is capable of acting as an agonist at central dopamine and serotonin receptors, as well as functioning as an antagonist at dopamine, norepinephrine, and serotonin receptors in the brain.

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Plasma ACTH levels have been variable in horses with a positive clinical response for therapy for equine Cushing's Disease (ECD). Therefore, our purpose was to determine the value of monitoring plasma adrenocorticotropin (ACTH) levels during treatment of equine Cushing's disease (ECD) with either cyproheptadine (n = 32) or pergolide (n = 10). First, we validated the chemiluminescent ACTH assay (specificity, precision, accuracy, intra-assay and interassay variations) and tested methods of handling the whole blood from the time of collection to when the ACTH was assayed. The sensitivity and specificity of high plasma ACTH levels for detecting ECD was determined in a retrospective study on hospitalised horses (n = 68). Surveys were sent to veterinarians who submitted equine ACTH levels that were high initially and had at least 2 ACTH samples to determine the value of monitoring ACTH levels during therapy of ECD. The ACTH chemiluminescent assay was valid. The ACTH was stable when whole blood was collected and held in plastic tubes for 8 h before separating the plasma. The sensitivity and specificity of plasma ACTH levels for detecting ECD were 84% (n = 19,95% CI 60,97) and 78% (n = 49,95% CI 63,88), respectively. Treated horses generally showed a decrease in plasma ACTH. Plasma ACTH levels may be helpful when monitoring therapy of ECD, although improvement in clinical signs should be considered most important. There were no differences between cyproheptadine and pergolide in terms of improvements in any of the clinical signs.

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We hypothesized that rhythms in hypothalamic serotonergic activity were permissive to daily and estrous cycle-related rhythms of LH, FSH and prolactin (PRL). In the Syrian hamster, proestrus (PRO) is characterized by a surge of LH, FSH and PRL; diestrus (DIE) by low LH and FSH and a small surge of PRL, while in photoperiod-induced anestrous (PIA) animals there is a surge of LH and FSH and low PRL. Turnover rates of serotonin (5HT) in four brain areas were determined for the three reproductive states at 2-h intervals. Turnover in the preoptic area and arcuate nuclei did not change, indicating that 5HT projections to these regions probably do not control LH, FSH or PRL release. Serotonin turnover in the median eminence (ME) was elevated at 0600 h in PIA females, at 0600 h, 0800 h, and 1400 h on DIE and at 0600 h and 2200 h on PRO. Since the pattern of 5HT turnover in the ME is different during each of the three reproductive states, 5HT in this area is likely not crucial to the control of LH, FSH and PRL. Turnover of 5HT also did not change in the suprachiasmatic nuclei (SCN) of PRO or PIA animals. However, 5HT turnover rates in the SCN were elevated at 1200 h, 2000 h, and 2400 h on DIE. The correlation of high 5HT turnover in the SCN of DIE but not PRO and PIA animals suggested that elevated serotonergic activity in the SCN is part of the mechanism by which the gonadotropin surge is prevented on DIE. To test this, PRO and DIE hamsters were injected with 5HT receptor ligands. Administration of a 5HT agonist attenuated the PRO surge of LH and blocked the surge of PRL. In contrast, administration of two 5HT antagonists failed to elicit a surge of LH in DIE and phenobarbital-blocked PRO females, an indication that other mechanisms also contribute to inhibition of gonadotropin and PRL surges.

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Intake of an initial substance (e.g., 0.15% saccharin) is suppressed when the presentation of this substance precedes the availability of a preferred solution (e.g., 32% sucrose) in brief daily pairings. The present experiments show that degree of this anticipatory contrast effect is related to the relative hedonic value of the substances paired each day. When the initial substance has low hedonic value relative to the second substance (e.g., water or empty tube paired with 32% sucrose), then a facilitation effect rather than contrast occurs. As the hedonic value of the initial substance increases (0.0015% saccharin, 0.5% sucrose, 0.015% saccharin, 1% sucrose, 2% sucrose, 0.15% saccharin), facilitation is replaced by contrast, which develops sooner and becomes larger the greater the hedonic value of the initial substance. The serotonin antagonist cyproheptadine increased absolute lick frequencies, but did not alter contrast. The serotonin1A agonist buspirone tended to decrease absolute lick frequencies, but did not alter contrast. The occurrence of contrast is discussed in terms of response competition, inhibition, and devaluation of the initial substance.

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Radioactivity was excreted in the urine and feces of rats, mice, and humans after a dose of 14C-cyproheptadine. The major metabolite in rat urine was unconjugated, but the majority of radioactive materials in mouse and human urine were conjugated with glucuronic acid. Identification of the rat urinary metabolite of cyproheptadine as an epoxide was accomplished with mass spectrometry and other methods. The rat metabolite was 10.11 -epoxydesmethylcyproheptadine and accounted for about 25% of a 45-mg dose of cyproheptadine per kg. Only a small amount of this epoxide was found in mouse urine, and none was apparent in the urine of two humans who received 5 mg of the drug. Dihydrodiols, which could arise by epoxide hydrase hydrolysis of possible 10.11-epoxy metabolites, were not found in the urine of any of the species studied. The spoxide found in rat urine appears to be unusually stable to in vivo hydrolysis. Possible implications of these results in the species-selective pancreotoxicity of cyproheptadine in the rat are presented.

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Healthy volunteers (N = 98) were randomly assigned in a double-blind fashion to receive loratadine (n = 33), diphenhydramine (n = 32), or placebo (n = 33). A computerized test battery was administered at baseline, on day 1 after administration of the initial dose, and on days 3 and 5.

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periactin buy 2015-10-22

An observer blind clinical study was carried out among 64 Nigerian patients with allergic rhinitis to assess the efficacy and tolerance of loratadine buy periactin a new generation H1 antihistamine. Patients were allotted randomly to receive treatment for 1 week with either loratadine + Vit. C (group A), chlorpheniramine + Vit. C (group B), or Vit. C alone (group C). Assessment was by subjective symptom scoring of three nasal symptoms namely; sneezing, rhinorrhoea and nasal blockage. Difference between pre treatment and post treatment mean symptom scores was used as degree of improvement for statistical analysis and this formed the primary efficacy parameter. Adverse effects namely; anticholinergic effects, gastrointestinal effects and drowsiness were assessed following treatment. The results showed that loratadine was significantly better than Vit. C. alone (P = 0.0002) and chlorpheniramine was also significantly better than Vit. C. alone (P = 0.039). However, loratadine was significantly better than chlorpheniramine P = 0.046. Drowsiness was noted in 19.2% of patients on loratadine compared with 57.1% of patients on chlorpheniramine. lt is concluded that though both loratadine and chlorpheniramine were effective in the relief of symptoms of allergic rhinitis in Nigerian patients, loratadine was significantly more effective with minimal sedating effect.

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A fundamental challenge for the nervous system is to encode signals spanning many orders of magnitude with neurons of limited bandwidth. To meet this challenge, perceptual systems use gain control. However, whether the motor system uses an analogous mechanism is essentially unknown. Neuromodulators, such as serotonin, are prime candidates for gain control signals during force production. Serotonergic neurons project diffusely to motor pools, and, therefore, force production by one muscle should change the gain of others. Here we present behavioral and pharmaceutical evidence that serotonin modulates the input-output gain of motoneurons in humans. By selectively changing the efficacy of serotonin with drugs, we systematically modulated the amplitude of spinal reflexes. More importantly, force production in different limbs interacts systematically, as predicted by a spinal gain control mechanism. Psychophysics and pharmacology suggest that the buy periactin motor system adopts gain control mechanisms, and serotonin is a primary driver for their implementation in force production.

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We conducted a retrospective study that included 365 patients (64% buy periactin women and 36% men) diagnosed with different types of allergy in the "Atopia" Allergology Medical Center at Iaşi during the interval August 2012-August 2013. Patients were aged 2 to 90 years (mean age group 35.98 years; 39.55 years for women, and 29.74 years for men).

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1 N-(3'-4'-dimethoxycinnamoyl) anthranilic acid (N-5') exhibited a dose-dependent, potent inhibition of the passive cutaneous anaphylaxis (PCA) mediated by homocytotropic antibodies (HTA), which was hardly affected by anti-inflammatory agents such as phenylbutazone, indomethacin and prednisolone at any dose used. The HTA-induced PCA was significantly inhibited by combined treatment with diphenydramine and cyproheptadine. 2 Doses of N-5' which potently inhibited HTA-induced PCA inhibited only slightly the heterologous PCA produced by anti-bovine serum albumin (BSA) rabbit serum. This heterologous PCA was clearly inhibited by phenylbutazone, indomethacin and prednisolone. Diphenydramine and cyproheptadine, singly or combined inhibited the heterologous PCA only slightly. 3 The increased vascular permeability caused by histamine and 5-hydroxytryptamine was significantly inhibited by diphenyldramine or cyproheptadine, but not by N-5' and the anti-inflammatory agents used. 4 N-5' 150 mg/kg orally inhibited rat paw oedema induced by carrageenin by about 26% while phenylbutazone, indomethacin and prednisolone produced significant inhibition. 5 N-5' at concentrations of 100 and 1000 muM significantly inhibited (by about 52% and 95%, respectively) the histamine release from rat peritoneal cells induced by HTA; 10 muM N-5' buy periactin had little effect. Histamine release was inhibited by phenylbutazone or indomethacin at 1000 muM but not at 100 muM. Prednisolone had no effect on histamine release at any of the concentrations used. 6 These findings suggest that the inhibition of the HTA-induced PCA by N-5' may be due to inhibition of histamine release and is clearly different from the actions of anti-inflammatory agents such as phenylbutazone, indomethacin and prednisolone.

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The effects of 5-HT agonists buy periactin and antagonists, benzodiazepine anxiolytics and tricyclic antidepressants on restraint stress-induced anorexia in rats were examined. The selective 5-HT(1A) agonists 8-hydroxy-2-(di- n-propylamino)tetralin (8-OH-DPAT), buspirone and ipsapirone, when injected 2 h after the termination of stress, attenuated stress-induced anor exia and body weight loss. The effects of 8-OH-DPAT on stress-induced anorexia were blocked by the 5-HT(1A) antagonist spiperone but not by the 5-HT(2) antagonist ketanserin. The preferential 5-HT(1B) agonists RU-24969 and quipazine induced anorexia in unstressed rats and tended to supplement the anorectic effects of stress. The benzodiazepines chlordiazepoxide and diazepam and the 5-HT antagonist cyproheptadine had no effect on stress-induced anorexia, when given (like the 5-HT(1A) agonists) 2 h after the stress. Similarly, daily injection for 2 weeks of the tricyclic antidepressants desipramine and sertraline had no beneficial effect. The data suggest that 8-OH-DPAT, buspirone and ipsapirone attenuate stress-induced anorexia in rodents by a hyperphagic action on 5-HT(1A) receptors.

periactin generic 2015-05-06

Cyp 2.3 ig for 10 d decreased serum thyroid stimulating hormone (TSH) from control groups (5.3 +/- 0.9) to (4.2 +/- 0.9) mU.L-1 and insulin levels from (64 +/- 8) to ( buy periactin 50 +/- 9) kIU.L-1 (P < 0.05 and 0.01). Cyp 4.6 decreased serum TSH (3.8 +/- 0.5) mU.L-1, T3 (1.2 +/- 0.2) mmol.L-1, T4 (62 +/- 7) mmol.L-1, and insulin levels (42 +/- 8) kIU.L-1 decreased (P < 0.05 or 0.01). The retrograde changes of ultrastructure of pituitary TSH cells and pancreatic beta cells.

periactin drug test 2017-12-18

Crinum glaucum A. Chev (Amaryllidaceae) (CG) is a bulbous plant widely used in folk medicine in the treatment of cough, asthma and convulsions. This study was carried out to investigate the anticonvulsant, anxiolytic and hypnotic effects of the aqueous bulb extract of C. glaucum and its possible mechanism (s) of action. The anticonvulsant activity of C. glaucum extract (400-1200 mg kg(-1) p.o.) was investigated using picrotoxin, strychnine, isoniazid, pentylenetetrazol and N-methyl-D-aspartate (NMDA)-induced seizures in mice while the elevated plus maze test (EPM) and hexobarbitone-induced sleeping time (HIST) were used to evaluate the anxiolytic and hypnotic effects, respectively. Animals were pretreated with flumazenil (3 mg kg(-1); i.p. GABA(A) receptor antagonist), cyproheptadine (4 mg kg(-1); i.p. 5-HT2 receptor antagonist), L-arginine (500 mg kg(-1); p.o. Nitric Oxide (NO) precursor) and L-Nitroarginine (L-NNA) (10 mg kg(-1) i.p. Nitric Oxide Synthase (NOS) inhibitor) were used to investigate the probable mechanism (s) of anticonvulsant activity. Oral administration of CG significantly (p < 0.001) delayed the onset of seizures induced by picrotoxin, strychnine, isoniazid and pentylenetetrazol with peak effect at 1200 mg kg(-1) in comparison to control groups. CG (800 and 1200 mg kg(-1)) strongly antagonized NMDA-induced turning behavior. Pretreatment of mice with cyproheptadine could not reverse the anticonvulsant effect of CG. However, pretreatment with flumazenil and L-NNA significantly (p < 0.05) reversed the anticonvulsant effect of CG while L-arginine pretreatment significantly (p < 0.001) delayed the onset of seizures when compared with control and extract (1200 buy periactin mg kg(-1) only). CG potentiated hexobarbitone-induced sleeping time with peak effect at 400 mg kg(-1) and also significantly (p < 0.05) increased open arm exploration in EPM and had its peak anxiolytic effect at 100 mg kg(-1). The data obtained suggests that aqueous bulb extract of Crinum glaucum possess anticonvulsant, anxiolytic and hypnotic activities which involve an interaction with GABAergic, nitrergic and glutaminergic systems to exert its effects.

periactin medication 2016-01-23

Allergic disease affects an estimated 50% of children worldwide and causes considerable impairment in academic performance and daily activities. Pediatric formulations for allergy treatment are often highly sugared or contain ingredients to improve palatability, appearance, and patient acceptance/adherence. These buy periactin excipients, however, are associated with dental caries, gastrointestinal intolerance, and dermatologic reactions.

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Recent buy periactin studies have demonstrated that some antihistamines can attenuate histamine-induced release of inflammatory mediators from bronchial epithelial cells.

periactin 4mg dose 2017-07-26

A need exists for safe, effective therapy for the relief of the symptoms of allergic rhinitis (AR) that also consistently relieves nasal congestion, the most common and bothersome symptom. This study was performed to assess efficacy and safety of a once-daily tablet containing 10 mg of loratadine, an antihistamine, and 10 mg of montelukast, a leukotriene antagonist (SCH 445761) versus placebo and pseudoephedrine (PSE; 240 mg once-daily formulation; active comparator). In a multicenter, parallel-group, double buy periactin -blind, double-dummy, randomized study, 1095 subjects with documented history of seasonal AR and positive skin-prick test to a prevailing aeroallergen were treated for 15 days with fixed-dose combination loratadine/montelukast (L/M), PSE, or placebo. After randomization, subjects rated severity of nasal congestion and measured peak nasal inspiratory flow (PNIF) rate in the morning and evening. The change in quality of life from baseline was also assessed. L/M and PSE were significantly more effective than placebo in alleviating nighttime and daytime nasal congestion and improving PNIF rate, an objective measure of nasal obstruction. There were no significant differences between L/M and PSE for any efficacy analysis including improvement in the quality of life. Subjects treated with L/M experienced a similar incidence of total adverse events versus placebo and a lower incidence of total adverse events (including dizziness, insomnia, jitteriness, nausea, and dry mouth) versus PSE. Nasal decongestant activity of L/M was significantly higher than that of placebo and similar to that of PSE in symptomatic AR subjects. L/M showed a safety profile similar to placebo and was better tolerated than PSE. Thus, L/M offers a safe and efficacious alternative to PSE for the treatment of nasal congestion associated with AR.

periactin 4mg tablets 2015-04-23

The effect of CLH-CP (Cyproheptadine Chlorhydrate) on the oxidative activity of the nervous centers involved in the control of ingestion: hypothalamus, anterior cortex, amygdala and septal area, has been studied in normal and alcoholized male rats. The statistical analysis of the results showed that O2 consumption decreased significantly with CLH-CP in all studied structures buy periactin except the hypothalamus in the alcoholized group, whereas no modification of O2 consumption in the normal group had been observed after treatment with CLH-CP, which may be related to the assayed dose. There are further significant differences in O2 consumption between normal and alcoholized groups without treatment with CLH-CP, the O2 consumption being significantly higher in the latter group and in all the studied structures except the hypothalamus where the O2 consumption significantly decreased in the alcoholized group as compared to the normal group. These latter differences disappeared when the structures of both groups were treated with CLH-CP. On the basis of these observations the results of the CLH-CP effect in both animal groups are discussed.

periactin reviews 2015-02-05

The efficacy of Cyproheptadine, a serotonin antagonist, buy periactin in preventing the cerebral ischemic damage was tested on experimental model of transient global cerebral ischemia in Mongolian Gerbil. The semi-quantitative histological evaluation of the severity of ischemic damage showed a protective effect of Cyproheptadine, mainly in the anterior cortical areas.

buy periactin generic 2015-09-10

The biological activity of a stable unknown material(s), generated by aortic rings (bioactive aortic substance = BAS) isolated from rats injected with a high dose of indomethacin, was explored on contractions of several smooth muscle preparations from normal rats and its effects compared with those elicited by prostacyclin (PGI2) or buy periactin by 6-keto-prostaglandin F1 alpha (6-k-PGF1 alpha). The BAS evoked, as did PGI2 or 6-k-PGF1 alpha, positive inotropism in strips from rat stomach, ileum and urinary bladder, but failed to influence uterine contractions as did prostacyclin or its non-enzymatic metabolite. When tested in rat aortic strips both, PGI2 and the BAS produced relaxation, whereas 6-k-PGF1 alpha was not active. Moreover, lipid substances present in the incubates of aortic rings, were extracted and explored for effects on contractions of rat aortic strips and on arachidonate-evoked human platelet aggregation. These extracts were devoid of influence on both parameters. On the contrary, dried aqueous residues, after the lipid extraction of the supernatants of aortic ring incubates, exhibited human platelet antiaggregatory capacity as well as the ability to evoke positive and negative inotropism similar to those triggered by the BAS in different smooth muscle preparations. Experiments with BAS were also performed employing smooth muscle strips exposed to indomethacin, atropine, propranolol, phentolamine and cyproheptadine. The presence of these antagonists of several neuromodulators and of indomethacin failed to alter de BAS-induced inotropic capacity observed in controls. The findings suggest that the effects attributable to the BAS are not subserved by prostacyclin or other prostanoids, nor by acetylcholine, norepinephrine, histamine or 6-OH-tryptamine.

periactin buy online 2015-06-01

Effects of 5-HT2 receptor blockade on the amplitude of startle reflex, induced by an unexpected sound, and on its prepulse inhibition (PPI) were studied on mice of CBA strain and rats of Wistar and the genetically predisposed to catalepsy (GC) strains. The effect was dependent on type and dose of 5-HT2 antagonist used: 5-HT2A antagonist ketanserin increased startle amplitude at buy periactin the dose of 0.5 mg/kg and decreased it at the dose of 2 mg/kg. Mixed 5-HT2A/2C antagonist ritanserin (0.1 and 0.2 mg/kg) markedly increased startle in mice. Ketanserin and cyproheptadine produced opposite effects on startle reflex in rats with inherited neuropathology and in rats with normal genotype: marked decrease in GC rats and increase in Wistar rats was shown. Ketanserin and cyproheptadine produced a pronounced potentiation of PPI in mice and rats of both strains, ritanserin was ineffective. Results suggest 5-HT2 receptors implication in both startle and PPI regulation with 5-HT2C receptors in startle response and 5-HT2A in PPI predominant involvement.

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Our objective was to describe time trends Priligy Tablets Reviews in selected pregnancy exposures in the National Birth Defects Prevention Study (NBDPS).

periactin generic brand 2016-10-28

Previous studies with high doses of cyproheptadine suggested that serotonergic (5HT) neural mechanisms participate in the photoperiodic inhibition of secretion of LH in ovariectomized estradiol-treated ewes. In the present study, we tested this hypothesis further with lower doses of more specific 5HT2 receptor antagonists, including the highly specific ketanserin. Eight ovariectomized estradiol-treated ewes were subjected to 90 long days (16L: Hyzaar Medication 8D) followed by 207 short days (8L:16D) in order to induce photorefractoriness. Plasma LH concentrations were measured in blood sampled twice weekly. Changes in LH pulse frequency were measured after intrajugular injections of cyproheptadine or ketanserin (0.1, 0.25, 0.6, and 1.5 mg/kg) before the increase in LH secretion induced by the short days (SD ewes). After the ewes became refractory to short days (RSD ewes), they were again treated with the three lowest doses of cyproheptadine and ketanserin and, in addition, methysergide at the same doses. In the period following the transition from long to short photoperiod, LH secretion increased above basal levels after 42.0 +/- 0.0 days (mean +/- SEM) and then decreased after 137.0 +/- 7.4 days. In SD ewes, cyproheptadine significantly increased the number of LH pulses at the lowest dose tested (0.13 vs. 1.13 pulses/3 h at 0.1 mg/kg). Similar responses were observed at 0.25 mg/kg (0.13 vs. 0.88 pulses/3 h), at 0.6 mg/kg (0.13 vs. 0.75 pulses/3 h) and at 1.5 mg/kg (0.13 vs. 0.88 pulses/3 h). Ketanserin induced a dose-dependent increase in the number of LH pulses at 0.6 mg/kg (0 vs. 0.63 pulses/3 h) and at 1.5 mg/kg (0 vs. 0.75 pulses/3 h).(ABSTRACT TRUNCATED AT 250 WORDS)

periactin liquid dose 2015-02-02

Anorexia and weight loss are common findings in older persons. Over a life-time, normal persons decrease their food intake to counterbalance the decrease in physical activity and resting metabolic rate that occurs with aging. This physiological anorexia of aging increases the propensity to develop pathological anorexia and weight loss when an older person develops either a medical or psychological illness. The physiological anorexia of aging is due to a decreased opioid (dynorphin) feeding drive and an increase in the satiating effect of the gastrointestinal hormone, cholecystokinin. Nitric oxide deficiency may play a role in the early satiation commonly seen in older persons. A variety of social, psychological and medical conditions can lead to pathological anorexia. Depression is the most common cause of weight loss and anorexia in older persons. A number of conditions such as cancer and rheumatoid arthritis produce their anorectic and wasting effects by releasing cytokines. An idiopathic Levitra Generic Canada pathological senile anorexia has been characterised which also appears to be a cytokine-dependent syndrome. Early screening for malnutrition is a cornerstone of the management of anorexia; the Mini Nutritional Assessment is a well validated screening tool available for this purpose. Aggressive use of caloric supplements, enteral tube feeding and peripheral parenteral nutrition all have a role in the early management of anorexia. Numerous drugs (growth hormone, megestrol, cyproheptadine, tetrahydrocannabinol, anabolic steroids, prokinetic agents and antidepressants) have been utilised to treat the anorexia of aging with varying success.

periactin child dose 2015-07-04

This study performed by GPs shows that LP-33 improves the Protonix Dosage Po quality of life of subjects with persistent AR who are currently being treated with an oral H1-antihistamine. Whereas nasal symptoms had not changed, ocular symptoms had consistently improved.

periactin gel 2015-09-28

Mean concentration values of both groups were not statistically different (P > .05), but the differences were statistically significant according to time (P Arava Generic < .05). Statistically significant difference was not found between the groups according to the area under curve on the basis of both marginal and cumulative values for all different time intervals (P > .05).

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In vivo studies have suggested that serotonin (5HT) influences anterior pituitary function at the hypothalamic level. The present in vitro study investigated the possibility that 5HT may act directly on the anterior pituitary. The high affinity uptake of [3H]5HT into adult rat anterior pituitary tissue was examined in two types of experiments. 1) To test the specificity and saturability of uptake of 5HT in the anterior pituitary, pituitary tissue was incubated (37 C) with [3H]5HT (10(-8)-10(-6) M) in the presence and absence of excess (10(-5) M) unlabeled 5HT, norepinephrine, fluoxetine (FLUOX), metergoline, or cyproheptadine. A Hofstee analysis of the specific uptake of [3H]5HT gave an apparent Km value of 4.23 x 10(-7 Zyloprim Buy Online ) M and a Vmax of 1576 pmol/g/10 min [3H]5HT. The total uptake of [3H]5HT was not altered by norepinephrine or metergoline, but was significantly reduced (P less than 0.01-0.001) by FLUOX and cyproheptadine. Uptake was shown to be temperature and sodium dependent and not directly dependent on energy derived from glycolysis or aerobic metabolism. 2) To study the site of uptake of 5 HT in the anterior pituitary, in concomitant radioautographic experiments, tissue was incubated with [3H]5HT with and without excess 5HT or FLUOX. Three patterns of silver grain distribution were observed: 1) nonrandom concentrations over select anterior pituitary cells near blood vessels, 2) heavy aggregates of silver grains usually associated with blood vessels, and 3) a seemingly random dispersal of grains over pituitary tissue. Tissue incubated with [3H]5HT alone contained 10% heavily labeled cells, 32% moderately labeled cells, and 58% weakly labeled cells. In contrast, no heavily labeled cells were seen when tissue was incubated with either excess 5HT or FLUOX in addition to [3H]5HT. Our findings of saturable and specific high affinity uptake of [3H]5HT into a subgroup of anterior pituitary cells suggest a direct pituitary action of 5HT.

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We sought to investigate the effect of Detrol Pill Identify nasal allergen challenge on the maxillary sinus and study the effect of premedication with loratadine.

periactin medication uses 2016-12-04

This multicentric study compared 14-day treatment with loratadine (Clarityne) 10 mg once daily, terfenadine 60 mg twice daily and placebo in outpatients with seasonal allergic rhinitis. Of 275 patients enrolled, 256 (87 in the loratadine group, 89 in the terfenadine group and 80 in the placebo group) were evaluable for efficacy and 266 (90, 91 and 85 in respective groups) were evaluable for safety. Investigators graded the severity of 4 nasal and 4 nonnasal signs/symptoms and investigators and patients rated overall disease condition and therapeutic response on treatment days 3, 7 and 14; patients recorded when signs/symptoms of rhinitis were relieved, as well. Hematology and blood chemistry tests were conducted before and after therapy, and patients were questioned throughout the study about possible adverse experiences. At all visits, loratadine and terfenadine were significantly superior to placebo (p less than or equal to 0.004), and the two active medications were statistically comparable, based on mean totals of sign/symptom severity scores and ratings of overall disease condition and therapeutic response. By patients' last valid visit, mean totals of sign/symptoms severity scores improved by 56% and 53% for loratadine and terfenadine groups, respectively, but exacerbated by 5% for the placebo group. Moreover, an excellent or a good therapeutic response was observed in 58/87 (67%) loratadine-treated patients and 58/89 (65%) terfenadine-treated patients, as compared to 13/80 (16%) placebo-treated patients (p less than 0.01). A total of 61/76 (30%) patients in the loratadine group and 57/78 (73%) in the terfenadine group versus 22/71 (31%) in the placebo group experienced relief within the first 3 days of therapy (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

generic periactin 4mg 2015-06-04

Our understanding of the pathophysiology of allergy has moved to the molecular level, while study of epidemiology and genetics has revealed risks of developing allergies based on environmental and genetic profiles, and pharmacoeconomic data have enabled accurate measurement of the immense burden of allergic disease. These advances in allergy research have affected its management, particularly the search for new antiallergy therapies. New therapies should intervene in the systemic allergy inflammatory cascade and provide clinical efficacy that extends to multiple allergic disease states. In addition, these new therapies should present no additional safety issues, offer improvements over existing therapies, and have an impact on disease-impaired quality of life. In vitro studies show that desloratadine, a new, once-daily, nonsedating, selective histamine H1-receptor antagonist, blocks the systemic allergy cascade at multiple points. Desloratadine 5 mg once daily relieves the symptoms of chronic idiopathic urticaria and of both seasonal (SAR) and perennial allergic rhinitis. In patients with concomitant asthma and SAR, asthma symptoms are relieved and beta2-agonist medication use is decreased by desloratadine. Unlike many other second-generation histamine H1-receptor antagonists, desloratadine provides the added benefit of efficacy against nasal obstruction in SAR. Desloratadine improves quality of life by decreasing the impact of allergic symptoms on sleep and on daily activities.

periactin mg 2016-07-17

The number of daily administrations seems to correlate with the efficacy of SLIT.

periactin cyproheptadine tablets 2017-07-29

Piratoxin-I (PrTX-I) is a Lys-49 phospholipase (PLA(2)) homologue, isolated from Bothrops pirajai snake venom, that has no phospholipase activity. In this study, we investigated the in vivo oedematogenic activity of PrTX-I in both the rat and the rabbit as well as the ability of PrTX-I to activate rat mast cells in vitro. In the rat paw and skin, PrTX-I (3-100 microg/paw) induced a dose-dependent oedema that was associated with extensive mast cell degranulation. The involvement of mast cells in PrTX-I-mediated oedema formation in the rat was further confirmed by the findings that this protein significantly activated rat peritoneal mast cells in vitro, causing the release of [(14)C]5-hydroxytryptamine ([(14)C]5-HT; 51 +/- 1%). In the rabbit, PrTX-I (10-100 microg/site) also induced dose-dependent skin oedema formation that was not affected by either mepyramine (a histamine H(1) receptor antagonist) or cyproheptadine (1.0 microg/site), indicating that mast cells do not play a role in this animal species. The bradykinin B(2) receptor antagonist Hoe 140 (0.5 microg/site) and the platelet-activating factor (PAF) receptor antagonist WEB 2086 (200 microg/site) also failed to affect the PrTX-I-induced rabbit skin oedema, ruling out the involvement of kinins and PAF. The PLA(2) inhibitor p-bromophenacyl bromide greatly reduced the PrTX-I-induced oedema in both the rat and the rabbit, and also inhibited the rat in vitro mast cell activation induced by this PLA(2) homologue. The polyanions heparin and dermatan sulphate efficiently prevented oedema formation in both species, and heparin inhibited PrTX-I-induced rat mast cell degranulation. Our results are consistent with the suggestion that the cationic charge of PrTX-I plays a major role in the inflammatory responses induced by this PLA(2) homologue.