User:Mr. Ibrahem/Ketotifen

Ketotifen, sold under the brand name Zaditor among others, is a medication used to treat allergic conjunctivitis and allergic rhinitis. It is taken by mouth or applied as an eye drop.

Common side effects, when taken by mouth, include anxiety, trouble sleeping, and irritability. Common side effects, when used as eye drops, include redness of the eyes, runny nose, and headache. While use is often not recommended, there is no evidence of harm in early pregnancy. It is a H1-antihistamine and mast cell stabilizer.

Ketotifen was patented in 1970 and came into medical use in 1976. In the United Kingdom 60 pills of 1 mg costs the NHS about £8. In the United States a 5 ml bottle of eye drops costs about 7 USD.