Phenytoin Side Effects

Phenytoin is an anti-convulsant medication prescribed to control certain types of seizures. It can be purchased as a generic drug and under the brand names Dilantin and Phenytek. Phenytoin is available in oral and injectable forms. Many side effects are possible, but are not common.

Side Effects

Phenytoin can cause side effects such as confusion, memory problems, poor concentration, jerky eye movements, decreased muscle coordination, hand shaking and slurred speech. These effects may be a sign the dosage should be reduced.

Oher Possible Effects

Other possible side effects include constipation, dizziness, headaches, insomnia, nausea and vomiting, nervousness and twitching.

Diabetic Considerations

Phenytoin can cause elevated glucose levels, so diabetic patients must closely monitor their blood sugar when taking this drug.

Allergic Reaction

Some people experience an allergic reaction to phenytoin. Symptoms include difficulty breathing, facial or mouth swelling and a rash or hives. Anyone who develops a rash while taking phenytoin should seek immediate medical attention.

Long-Term Use

Long-term use over months or years can cause other side effects. These include weakening of bones, acne, skin darkening, unusual growth or swelling of lips or gums and excessive facial or body hair.

References

• Phenytoin side effects
• Further information on side effects
• Phenytoin uses and side effects