Topaine 50mg Tablet is a medicine used to treat epilepsy (seizures) and to prevent migraines. It is also used in the treatment of Lennox-Gastaut syndrome (a rare, but severe form of epilepsy that starts in early childhood). Topaine 50mg Tablet may be taken with or without food, preferably at the same time, each day. If you have missed a dose, take it as soon as you remember it and finish the full course of treatment even if you feel better. Stopping the medication suddenly without talking to your doctor may cause an increased frequency of seizures. Your doctor may advise regular monitoring of serum bicarbonate levels while you are taking this medicine. Some of the common side effects of this medicine include nausea, taste change, fatigue, diarrhea, weight loss, loss of appetite, and memory impairment. It may also cause vision problems like myopia or glaucoma, so it is important to get your eyesight checked before you start the treatment and regularly thereafter. You may experience dizziness and sleepiness, so do not drive or do anything that requires mental focus until you know how this medicine affects you. Please consult your doctor if these side effects bother you or do not go away.