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Doxylamine succinate is one of the many sedating antihistamines used by itself as a short-term sleep aid, in combination with other drugs as a night-time cold and allergy relief drug, and a preparation is prescribed in combination with vitamin B6 (pyridoxine) to prevent morning sickness in pregnant women.
Additional recommended knowledge
Doxylamine is a member of the ethanolamine class of antihistamines and has anti-allergy power superior to almost every other antihistamine on the market, with the exception of diphenhydramine (Benadryl). It is also the most effective over-the-counter sedative available in the United States, and more sedating than some prescription hypnotics. In a study, it was found that doxylamine succinate is possibly more effective than the barbiturate phenobarbital for use as a sedative. For this reason, doxylamine has sometimes been used off label in a manner similar to diphenhydramine for the reduction of anxiety symptoms.
The dosage required to induce hypnosis (sleep) can be as low as 6.25 mg, but is usually effective in dosages of up to 25 mg. Higher doses are not recommended by the United States Food and Drug Administration, although single dosage recommendations of up to 50 mg are common in countries like Australia, where it is marketed under the names Restavit and Dozile.
Doxylamine succinate is a potent anticholinergic and has a side-effect profile common to such drugs, including dry mouth, ataxia, urinary retention, and drowsiness. Other drugs with well known anticholinergic effects include many antipsychotic and tricyclic antidepressant drugs.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Doxylamine". A list of authors is available in Wikipedia.