ClemastineSkip to the navigation
Clemastine is an antihistamine used to relieve allergic rhinitis (seasonal allergy) symptoms including sneezing, runny nose, itching, and watery eyes. It is also used to treat itching and swelling associated with uncomplicated allergic skin reactions. Clemastine is available in nonprescription products alone and in a combination formula to treat symptoms of allergy, colds, and upper respiratory infections.
Common brand names:Dayhist-1, Tavist
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Potential Negative Interaction
Antihistamines, including clemastine, can cause “anticholinergic” side effects such as dryness of mouth and heart palpitations. Henbane (Hyoscyamus niger)also has anticholinergic activity and side effects. Therefore, use with clemastine could increase the risk of anticholinergic side effects,1 though apparently no interactions have yet been reported with clemastine and henbane. Henbane should not be taken except by prescription from a physician trained in its use, as it is extremely toxic.The interaction is supported by preliminary, weak, fragmentary, and/or contradictory scientific evidence.
Last Review: 03-18-2015
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