Istalol

This is the trade name for the glaucoma eye drop timolol. Timolol is a beta-blocker similar to the beta-blocker medicine used to control blood pressure. As this medicine has been around for a long time, it is also available as an inexpensive generic. Istalol comes in a thicker consistency, so the medicine lasts longer and is usually dosed once a day (as opposed to the twice a day dosing of the generic equivalent).