Doxylamine. Histamine can produce symptoms of sneezing itching watery eyes. Doxylamine is an antihistamine that reduces the effects of natural chemical histamine in the body.
NTP 1992 National Toxicology Program Institute of Environmental Health Sciences National Institutes of Health NTP. Doxylamine is an antihistamine that reduces the effects of natural chemical histamine in the body. Causing drowsiness is considered a side effect but it can be a useful one for some people who need help getting to sleep or staying asleep.
Its also used for nighttime cold symptoms.
Its also used for nighttime cold symptoms. Doxylamine is an antihistamine that reduces the effects of natural chemical histamine in the body. Doxylamine Succinate is a pyridine derivate histamine H1 antagonist with pronounced sedative properties. Doxylamineis an antihistamine used to relieve symptoms of allergy hay fever and the common cold.