Search results
Results from the WOW.Com Content Network
In 2020, the UK National Health Service wrote that "[m]ost people can safely take antihistamines" but that "[s]ome antihistamines may not be suitable" for young children, the pregnant or breastfeeding, for those taking other medicines, or people with conditions "such as heart disease, liver disease, kidney disease or epilepsy". [30]
Antihistamines are usually for short-term treatment. Chronic allergies, such as allergic asthma may include health problems which antihistamines alone cannot treat. [ 9 ] The routes of administration of antihistamines are usually oral, intranasal , intraocular and topical .
Cyproheptadine, sold under the brand name Periactin among others, is a first-generation antihistamine with additional anticholinergic, antiserotonergic, and local anesthetic properties. It was patented in 1959 and came into medical use in 1961. [ 5 ]
Clemastine is an antihistamine with anticholinergic and sedative effects. Antihistamines competitively bind to histamine receptor sites, thus reducing the neurotransmitter's effects. [9] Effects of histamine (which are countered by antihistamines) include: Increased capillary permeability; Increased capillary dilatation; Edema (i.e., swelling ...
H 1-antihistamines can be administered topically (through the skin, nose, or eyes) or systemically, based on the nature of the allergic condition. The authors of the American College of Chest Physicians Updates on Cough Guidelines (2006) recommend that, for cough associated with the common cold, first-generation antihistamine-decongestants are ...
As an antihistamine, doxylamine is an inverse agonist of the histamine H 1 receptor. As a first-generation antihistamine, it typically crosses the blood–brain barrier into the brain, thereby producing a suite of sedative and hypnotic effects that are mediated by the central nervous system. (N.b.:
Chlorphenamine is an alkylamine and is a part of a series of antihistamines including pheniramine (Naphcon) and its halogenated derivatives including fluorpheniramine, dexchlorphenamine (Polaramine), brompheniramine (Dimetapp), dexbrompheniramine (Drixoral), deschlorpheniramine, and iodopheniramine.
Hydroxyzine, sold under the brand names Atarax and Vistaril among others, is an antihistamine medication. [8] It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). [8] It is used either by mouth or injection into a muscle. [8] Hydroxyzine works by blocking the effects of histamine. [9]