

SPECIAL POPULATION: Patients with Renal Impairment: The daily dose of levetiracetam must be individualized according to patient's renal function. (See Table 3.)

To use this dosing table, an estimate of the patient's creatinine clearance (CLcr) in mL/min is needed. The CLcr in mL/min may be estimated from serum creatinine (mg/dL) determination using the following formula: See Equation 1.

The CLcr is adjusted for body surface area (BSA) as follows: See Equation 2.

Children with Renal Impairment: The daily dose of levetiracetam must be individualized according to renal function. This recommendation is based on a study in adult renally impaired patients.
The CLcr in mL/min/1.73 m2 may be estimated from serum creatinine (mg/dL) determination, for young adolescents and children using the following formula (Schwartz formula): See Equation 3.

ks= 0.55 in Children to less than 13 years and in adolescent female; ks= 0.7 in adolescent male.
Dosing adjustment for children and adolescents patients weighing less than 50 kg with impaired renal function: See Table 4.

Patients with Hepatic Impairment: Severe Hepatic Impairment: A 50% reduction of the daily maintenance dose is recommended when the creatinine clearance is <70 mL/min. No dose adjustment is needed for patients with mild to moderate hepatic impairment.