Contraindicated in:
Use Cautiously in:
CNS: SUICIDAL THOUGHTS, drowsiness, fatigue, agitation/irritability, depression, dizziness, psychomotor slowing, psychosis, weakness.
EENT: amblyopia, tinnitus.
Resp: cough, pharyngitis.
GI: anorexia, nausea, vomiting.
F and E: metabolic acidosis.
GU: kidney stones.
Derm: STEVENS-JOHNSON SYNDROME, TOXIC EPIDERMAL NECROLYSIS, oligohydrosis (↑ in children), rash.
Metab: hyperthermia (↑ in children).
Neuro: abnormal gait, hyperasthesia, incoordination, tremor.
Misc: DRUG REACTION WITH EOSINOPHILIA AND SYSTEMIC SYMPTOMS (DRESS).
Drug-Drug:
(Generic available)
Absorption: Well absorbed following oral administration.
Distribution: Binds extensively to red blood cells.
Protein Binding: 40%.
Metabolism/Excretion: Mostly metabolized by the liver; 35% excreted unchanged in urine. Some metabolism occurs via CYP3A4 enzyme system.
Half-life: 63 hr (plasma).
(blood levels)
ROUTE | ONSET | PEAK | DURATION |
PO | unknown | 26 hr | 24 hr |
Requires 2 wk of dosing to achieve steady-state blood levels.
NDC Code*