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Pheniramine (trade name Avil among others) is an antihistamine with anticholinergic properties used to treat allergic conditions such as hay fever or urticaria.It has relatively strong sedative effects, and may sometimes be used off-label as an over-the-counter sleeping pill in a similar manner to other sedating antihistamines such as diphenhydramine.
Nephazoline works by resulting in constriction of blood vessels thus decreasing redness while pheniramine works by blocking the effects of histamine to stop itching. [ 1 ] The combination was approved for medical use in the United States in 1994.
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.
Phenindamine (Nolahist, Thephorin) is an antihistamine and anticholinergic closely related to cyproheptadine.It was developed by Hoffman-La Roche in the late 1940s. [1] It is used to treat symptoms of the common cold and allergies, such as sneezing, itching, rashes, and hives.
Serotonin. A serotonin reuptake inhibitor (SRI) is a type of drug which acts as a reuptake inhibitor of the neurotransmitter serotonin (5-hydroxytryptamine, or 5-HT) by blocking the action of the serotonin transporter (SERT).
Dexbrompheniramine is an antihistamine with anticholinergic properties [1] used to treat allergic conditions such as hay fever or urticaria.It is the pharmacologically active dextrorotatory isomer of brompheniramine.
Mepyramine, also known as pyrilamine, is a first-generation antihistamine, targeting the H 1 receptor as an inverse agonist. [1] Mepyramine rapidly permeates the brain, often causing drowsiness. [2]