Cyproheptadine, sold under the brand name Periactin among others, is a first-generation antihistamine with additional anticholinergic, antiserotonergic, and local anesthetic properties. It was patented in 1959 and came into medical use in 1961. Medical uses
Cyproheptadine is used to treat allergic reactions (specifically hay fever). The evidence for its use for this purpose indicates its effectiveness but second generation antihistamines such as ketotifen and loratadine have shown equal results with fewer side effects.It is also used as a preventive treatment against migraine. In a 2013 study the frequency of migraine was dramatically reduced in patients within 7 to 10 days after starting treatment. The average frequency of migraine attacks in these patients before administration was 8.7 times per month, this was decreased to 3.1 times per month at 3 months after the start of treatment. This use is on the label in the UK and some other countries.
Lathosterolosis is a defect in cholesterol biosynthesis. See also
SC5DL
Lathosterol

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