Epinastine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. Epinastine ophthalmic (for the eyes) is used to prevent itching of the eyes caused by allergies. Epinastine ophthalmic should not be used to treat eye irritation or discomfort caused by wearing contact lenses. Epinastine ophthalmic may also be used for purposes not listed in this medication guide.
Elestat is an eye drop that contains epinastine as well as an antihistamine that is meant to reduce effects that come with natural chemical histamine that is found in the body. Elestat can be used to treat itching, irritation or stinging eyes.