Where To Buy Careprost? Careprost Eye Drop contains bimatoprost as an active ingredient. It is used to treat a condition in which the pressure inside the eyes rises (glaucoma). You should not use Careprost Eye Drop if you are allergic to any of its ingredients. Use these eye drops in a dose and duration prescribed by your doctor. Itching, paining and redness of eyes are some common side effects of Careprost Eye Drop. If side effects persist or there is no improvement in your condition, then immediately consult with your doctor.