Phenytoin helps treat symptoms of epilepsy by preventing and regulating seizures. It works by calming overactive nerves in your body. Phenytoin is an anti-epileptic drug, also called an anticonvulsant. Phenytoin works by slowing down impulses in the brain that cause seizures. Phenytoin is used to control seizures. It does not treat all types of seizures, and your doctor will determine if it is the right medicine for you. View phenytoin information, including dose, uses, side-effects, pregnancy, breast feeding, contra-indications, monitoring requirements and important safety information. Phenytoin is used to treat certain types of seizures. Common side effects include drowsiness, confusion, slurred speech, trouble with balance or coordination, and uncontrollable eye movements. Phenytoin is used to prevent and control seizures (also called an anticonvulsant or antiepileptic drug). It works by reducing the spread of seizure activity in the brain. Learn about side effects, dosages, drug interactions, and more. Phenytoin - Wikipedia. Jump to content. Main menu. move to sidebarhide. Navigation. Main page. Contents. Current events. Random article. About Wikipedia. Contact us. Contribute. Help. Learn to edit. Community portal. Recent changes. Upload file. Special pages. Search. Appearance. Donate. Create account. Log in. Personal tools. Donate. Phenytoin is used to control certain type of seizures, and to treat and prevent seizures that may begin during or after surgery to the brain or nervous system. Phenytoin is in a class of medications called anticonvulsants. Phenytoin (Dilantin) is an antiepileptic medication used to treat and prevent seizures in adults and children. It comes in a capsule, chewable tablet, and liquid suspension that you take by mouth. The dose depends on your age, weight, and how well your seizures are controlled. Phenytoin is used to control seizures (convulsions), including tonic-clonic (grand mal) and psychomotor (temporal lobe) seizures, in the treatment of epilepsy. It is also used to prevent and treat seizures that occur during brain surgery. Dilantin (phenytoin) is an anti-epileptic drug used to control seizures. Includes Dilantin side effects, interactions and indications.