Magprol CR 300 Tablet belongs to a group of medicines called anti-epileptics. It is used to treat two conditions – epilepsy and bipolar disorder. It also helps in the prevention of migraine. This way it prevents extreme mood swings and abnormal brain signals that trigger seizures (fits). Magprol CR 300 Tablet can be used alone or in combination with other medicines. It may be taken with or without food. Your doctor will decide the correct dose for you. This may increase gradually until your condition is stable. This medicine may take several weeks to work but it is important to take it regularly to get the benefit. Do not stop taking it, even if you feel fine, unless your doctor advises you to. You may have more seizures, or your bipolar disorder may get worse. The most common side effects of this medicine include skin rashes, headache, feeling or being sick, difficulty sleeping, dizziness, and feeling sleepy or drowsy. Most side effects wear off, but if they bother you or do not go away, tell your doctor. There may be ways of preventing or reducing these effects. Long-term treatment can cause weakness in your bones (osteoporosis), increasing your risk of breaking a bone. Before taking this medicine, tell your doctor if you have kidney or liver problems, meningitis or depression, or suicidal thoughts. Also let your healthcare team know about all other medications you are using as some may affect, or be affected by, this medicine, including contraceptive pills. If you are pregnant or breastfeeding, the dose may be adjusted. You should avoid driving or riding a bicycle if this medicine makes you drowsy or dizzy. You may need frequent blood tests to check how you are responding to this medicine.