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Phenylephrine is an oral medication primarily used as a decongestant. [5] [6] It is a selective α 1-adrenergic receptor activator which results in the constriction of both arteries and veins. [5] Common side effects include nausea, headache, and anxiety. [5] Phenylephrine was patented in 1927 and came into medical use in 1938. [7]
Pseudoephedrine acts indirectly on the adrenergic receptor system, whereas phenylephrine and oxymetazoline are direct agonists. The effects are not limited to the nose, and these medicines may cause hypertension (high blood pressure) through vasoconstriction; it is for this reason that people with hypertension are advised to avoid them. Most ...
Phenylephrine, sold under the brand names Neosynephrine and Sudafed PE among others, is a medication used as a decongestant for uncomplicated nasal congestion in the form of a nasal spray or oral tablet, [5] to dilate the pupil, to increase blood pressure given intravenously in cases of low blood pressure, and to relieve hemorrhoids as a suppository.
However, since its introduction to the market in 2013, the drug’s efficacy in cats has been subject to extensive study. The post Apoquel for Cats: Uses, Dosage, & Side Effects appeared first on ...
The side effects typically resolve either on their own or following a decrease in the dosage. Treatment is ceased in the event of gastrointestinal symptoms and not restarted until they have resolved. Gastrointestinal side effects are more common in cats receiving oral rather than topical treatment.
The mechanisms of sympathomimetic drugs can be direct-acting (direct interaction between drug and receptor), such as α-adrenergic agonists, β-adrenergic agonists, and dopaminergic agonists; or indirect-acting (interaction not between drug and receptor), such as MAOIs, COMT inhibitors, release stimulants, and reuptake inhibitors that increase the levels of endogenous catecholamines.
Many tricyclic antidepressants, tetracyclic antidepressants, antipsychotics, ergolines, and some piperazines like buspirone, trazodone, nefazodone, etoperidone, and mepiprazole antagonize α 1-adrenergic receptors as well, which contributes to their side effects such as orthostatic hypotension.
The post Penicillin for Cats: Uses, Dosage, & Side Effects appeared first on CatTime. Penicillin for cats is an antibiotic medication derived from the Penicillium fungi. It falls under the beta ...