AT Zol 250mg Tablet is a medicine used to reduce pressure in the eyes. This pressure can be caused by or lead to an illness called glaucoma. If the pressure in your eye is too high it can damage your sight. AT Zol 250mg Tablet works by decreasing the amount of fluid inside the eye. You can take AT Zol 250mg Tablet with or without food. The dose will depend on your condition and how you respond to the medicine. Try to take it at the same time each day. It is important to keep taking this medicine until your doctor tells you not to. Use this medicine regularly to get the most benefit from it even if you feel well. The most common side effect is headache. Other side effects include feeling tired, dizziness, and taste change. Make sure you read the leaflet that comes with your medicines and tell your doctor if you are bothered by side effects or they do not go away. It may be possible to adjust your dose or try a different medicine. This drug is not recommended during pregnancy and you should ask your doctor before taking it if you have kidney or liver disease, heart trouble or diabetes.