Usual Adult Dose for Seizures:
MONOTHERAPY:
-Initial dose: 100 mg orally or IV twice a day (200 mg per day)
-Titration: Increase the dose by 50 mg twice a day (100 mg per day) every 7 days
-Maintenance dose: 150 to 200 mg orally or IV twice a day (300 to 400 mg per day)
-Alternate dosing: Initiate therapy with a single loading dose of 200 mg orally or IV, followed 12 hours later by 100 mg orally or IV twice a day for 7 days; based on individual response and tolerability, the dose can be increased by 50 mg twice a day (100 mg per day) every 7 days, as needed, up to a maintenance dose of 150 to 200 mg orally or IV twice a day (the loading dose should be administered with medical supervision because of the increased incidence of CNS adverse reactions)
ADJUNCTIVE THERAPY:
-Initial dose: 50 mg orally or IV twice a day (100 mg per day)
-Titration: Increase the dose by 50 mg twice a day (100 mg per day) every 7 days
-Maintenance dose: 100 to 200 mg orally or IV twice a day (200 to 400 mg per day)
-Alternate dosing: Initiate therapy with a single loading dose of 200 mg orally or IV, followed 12 hours later by 100 mg orally or IV twice a day for 7 days; based on individual response and tolerability, the dose can be increased by 50 mg twice a day, as needed, up to the maximum maintenance dose of 200 mg orally or IV twice a day (the loading dose should be administered with medical supervision because of the increased incidence of CNS adverse reactions)
Comments:
-Therapy can be initiated with either oral or IV administration.
-The oral formulation may be taken with or without food.
-The IV formulation is intended as an alternative when oral administration is temporarily not feasible.
-The IV formulation can be administered in the same dosing regimens used for oral dosing, including the loading dose.
-The IV formulation should be infused over a period of 15 to 60 minutes; IV infusion over 30 to 60 minutes is preferable, and should be used when a 15-minute administration is not required.
Use: As monotherapy or adjunctive therapy for partial-onset seizures in patients 4 years of age and older
 Detailed Vimpat dosage information
What happens if I miss a dose?
Use the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not use two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
