Phenytoin is available in Canada by prescription only. It is rarely used in children. If used with phenobarbital , there is a possibility that the user may become dependent on the drug. How to Use - The actual dosage will vary until the doctor stabilizes the blood levels needed for maximum therapeutic dosage.
Phenytoin is taken by mouth or administered by injection in the hospital.
Side Effects - Common side effects of phenytoin may include slurred speech, dizziness, insomnia, coordination problems, constipation, nausea and vomiting. Use over a long period may also result in some connective tissue damage. Coarsening of facial features, overgrowth of the gums, and enlargement of the lips may also appear. Precautions - The elderly and those with impaired liver function should be under close medical supervision because the liver is to susceptible to phenytoin. People with diabetes should be cautious taking phenytoin because it may inhibit the release of insulin in the body.