Proper Use of This Medicine

Dosing—The dose of vigabatrin will be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of vigabatrin. If your dose is different, do not change it unless your doctor tells you to do so.

• For oral dosage form ( powder):
  • For epilepsy
    • Adults— To start, 1000 milligrams (mg) a day. The doctor may need to adjust the dose depending on your response to the medicine. However, the dose is usually not more than 4000 mg a day.
    • Children—The dose is based on body weight and will be determined by your doctor. To start, 40 milligrams (mg) per kilogram (kg) (18.2 mg per pound) of body weight per day. Your doctor may increase your dose as needed. However, the dose is usually not more than 100 mg per kg (45.5 mg per pound) of body weight a day, taken in two smaller doses.
  • For infantile spasms
    • Children—The dose is based on body weight and will be determined by your doctor. The usual dose is 50 to 100 mg per kg (22.7 to 45.5 mg per pound) of body weight per day, given in smaller doses twice a day. The doctor may need to adjust the dose based on your response to the medicine.
• For oral dosage form (tablets):
  • For epilepsy
    • Adults—To start, 1000 milligrams (mg) a day. The doctor may need to adjust the dose depending on your response to the medicine. However, the dose is usually not more than 4000 mg a day.
    • Children—The dose is based on body weight and will be determined by your doctor. To start, 40 mg per kg (18.2 mg per pound) of body weight a day. Your doctor may increase your dose as needed. However, the dose is usually not more than 100 mg per kg (45.5 mg per pound) of body weight a day, taken in two smaller doses.

Missed dose— If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage—To store this medicine:

• Keep out of the reach of children.
• Store away from heat and direct light.
• Do not store in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
• Do not keep outdated medicine or medicine no longer needed. Ask your health care professional how you should dispose of any medicine you do not use. Be sure that any discarded medicine is out of the reach of children.