Drug
Clemastine
Common brand names:
Dayhist-1, TavistClemastine 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.
Summary of Interactions with Vitamins, Herbs, & Foods
Negative Interactions
1- Potential Negative Interaction
Clemastine
Henbane
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, 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.
HenbaneClemastine- Blumenthal M, ed. The Complete German Commission E Monographs. Austin, TX: American Botanical Council, 1998, 146.