Take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the dose you missed and take only your next regularly scheduled dose. Do not take a double dose of this medication. Seek emergency medical treatment. Do not drink alcohol while taking this medication.
Alcohol can cause deep sedation or sleepiness.
It may also increase your risk of having seizures. Use caution when driving, operating machinery, or performing other hazardous activities. Phenytoin may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities. Brush and floss your teeth as directed to reduce the risk of gum disease while you are taking phenytoin.