Xalatan is a nascent form of Latanoprost, a prostaglandin analog that treats ocular hypertension and open-angle glaucoma. The type of medicine used in a general manner is the latanoprost 0.005 eye drops. The medicine is the same as the one which came under controversy and it works in the same way to lower intraocular pressure because it makes the aqueous humor drain out of the eyes more easily.