Overview Ketotifen fumarate is an antihistamine and mast cell stabilizer commonly used to treat allergic conditions, particularly allergic conjunctivitis and asthma. It is available in both oral and ophthalmic formulations and works by reducing allergic reactions in the body. What is Ketotifen Fumarate? Ketotifen fumarate is a medication that blocks histamine receptors (H1) and stabilizes mast cells to prevent the release of inflammatory mediators. It is primarily used to treat eye allergies and prevent asthma symptoms. How It Works Ketotifen works by inhibiting the release of histamine and other allergic response mediators from mast cells. This dual mechanism helps prevent…