What is "unoprostone"

n. A prostaglandin analogue whose isopropyl ester is used to treat glaucoma and ocular hypertension.

Unoprostone ( INN) is a prostaglandin analogue. Its isopropyl ester, unoprostone isopropyl, was marketed under the trade name Rescula for the management of open-angle glaucoma and ocular hypertension, but is now discontinued in the US.