Phenytoin (Dilantin^®) is a medicine that is used for treating specific types of epileptic seizures. By affecting sodium channels in the brain, the drug can help control complex partial seizures, generalized tonic-clonic seizures, and seizures during brain surgery. Phenytoin is available by prescription and comes in the form of extended-release capsules, chewable tablets, and an oral suspension (liquid).

 

Side effects of phenytoin may include muscle coordination problems, slurred speech, and confusion. Among the conditions that you should let your healthcare provider know about before you take phenytoin are swollen lymph nodes, liver disease (such as liver failure or cirrhosis), and any allergies you may have (including allergies to food, dyes, or preservatives).