Fritolev -XR 500 Tablet is an anti-epileptic medicine used to treat seizures (fits) in epilepsy. It can be used alone or along with other medicines. It helps to prevent seizures for as long as you continue to take it. Fritolev -XR 500 Tablet suppresses the abnormal electrical activity in the brain. You can take it with or without food but try to take it at the same time each day to get the most benefit. The dose will depend on your condition and how you respond to the medicine. Your doctor will advise the right dose for you. It is generally advised as a long-term treatment. You should continue taking it for as long as your doctor has told you to, even if you feel well. If you stop or miss doses your seizures could get worse. Some common side effects of this medicine include dizziness, headache, infection, irritation, nasal congestion (stuffy nose), sleepiness, behavior changes, aggressive behavior, and decreased appetite. Side effects are more common during the first few weeks and usually lessen as your body gets used to the medicine. Most of these side effects do not need medical attention, but some of them can be serious. A small number of people being treated with this medicine have had thoughts of harming or killing themselves. Contact your doctor if your mood changes for the worse. Before taking it, you should tell your doctor if you have kidney problems, depression, or suicidal thoughts and if you are pregnant, planning to become pregnant, or breastfeeding. Your doctor may suggest regular blood tests to monitor your kidney function while taking this medicine.