|Treatments > Medications Used In MS|
Oral contraceptives (birth control pills) that contain estrogen may not be as effective if taken in conjunction with phenytoin. Consult with your physician about using a different or additional form of birth control to avoid unplanned pregnancies.
This medication may affect the blood sugar levels of diabetic individuals. Check with your physician if you notice any change in the results of your blood or urine sugar level tests while taking phenytoin.
Antacids or medicines for diarrhea can reduce the effectiveness of phenytoin. Do not take any of these medications within two to three hours of the phenytoin.
Before having any type of dental treatment or surgery, be sure to inform your physician or dentist if you are taking phenytoin. Medications commonly used during surgical and dental treatments can increase the side effects of phenytoin.
There have been reports of increased birth defects when hydantoin anticonvulsants were used for seizure control during pregnancy. It is not definitely known whether these medications were the cause of the problem. Be sure to tell your physician if you are pregnant or considering becoming pregnant.· Phenytoin passes into breast milk in small amounts.
Possible Side Effects
Side effects that should be reported to your physician: bleeding or enlarged gums; confusion; enlarged glands in the neck or underarms; mood or mental changes*; muscle weakness or pain*; skin rash or itching; slurred speech or stuttering; trembling; unusual nervousness or irritability.
Symptoms of overdose that require immediate attention: sudden blurred or double vision*; sudden severe clumsiness or unsteadiness*; sudden severe dizziness or drowsiness*; staggering walk*; severe confusion or disorientation.
*Since it may be difficult to distinguish between certain common symptoms of MS and some side effects of phenytoin, be sure to consult your health care professional if an abrupt change of this type occurs.