<unk>  is an antihistamine used to treat sneezing, runny nose, watery eyes, hives, skin rash, itching, and other cold or allergy symptoms. It is also used as a short-term treatment for sleep problems (insomnia). It is used in the combination drug pyridoxine/doxylamine to treat nausea and vomiting of pregnancy. As of 2004,<unk>  and diphenhydramine were the agents most commonly used to treat short-term insomnia. As of 2008, antihistamines were not recommended by the American Academy of Sleep Medicine for treatment of chronic insomnia "due to the relative lack of efficacy and safety data". Doses of<unk>  that have been used for sleep range from 5 to 50 mg, with 25 mg being the typical dose.
Doxylamine
Levopropylhexedrine
Difelikefalin
Halofantrine
Pentomone
Diallyllysergamide
Levomepromazine
Ethylnorepinephrine