Unoprostone is a prescription medication used to treat increased eye pressure in patients with glaucoma or ocular (eye) hypertension. Unoprostone belongs to a group of drugs called prostaglandins, which help to decrease the amount of fluid build-up in the eye.

This medication comes in eye drop solution form and is taken by placing one drop in the affected eye twice daily.

Common side effects of unoprostone include burning or stinging upon use, dry eyes, itching, and increased length of eyelashes.