TIMOLOL EYE DROP 0.5% is a prescription medication used to treat certain types of glaucoma and other eye conditions. It works by decreasing the amount of fluid in the eye, which helps to reduce pressure in the eye. This medication comes in a sterile, preservative-free solution that is easy to use. It is available in a single-use, 0.5% concentration, and is administered as one drop in the affected eye(s) as prescribed by your doctor. Common side effects may include stinging, burning, or redness in the eye. If you experience any serious side effects, contact your doctor immediately.