
Cyproheptadine is an antihistamine. Cyproheptadine blocks the effects of the naturally occurring chemical histamine in your body.

Periactin is the brand name of the drug cyproheptadine, a prescription medication recommended to allergy sufferers as well as patients diagnosed with a cold. It is a histamine blocker that controls allergy and cold symptoms. Symptoms that are managed with the use of Periactin include sneezing, watery eyes, hives, coughing and itching. Follow the directions of your doctor implicitly when using Periactin.

Cyproheptadine is in the FDA pregnancy category B. This means that it is unlikely to harm an unborn baby. Do not take cyproheptadine without first talking to your doctor if you are pregnant.

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