for you Epina eye drops are an antihistamine medicine. It is used to treat eye infections (redness and swelling) resulting from various allergies. It is used to relieve the symptoms of watery, itchy, red and swollen eyes or eyelids caused by allergic conjunctivitis. Place Epina eye drops in your eyes exactly as directed. It should be used regularly as prescribed by your doctor. Even if you feel better, do not miss a dose and complete the entire treatment.