Unlabeled Use:
Contraindicated in:
Use Cautiously in:
CV: edema, orthostatic hypotension.
Derm: alopecia, rash.
EENT: visual changes.
GI: anorexia, hepatitis, nausea, vomiting.
Hemat: blood dyscrasias, folic acid deficiency, megaloblastic anemia.
Neuro: ataxia, drowsiness, vertigo, excitement (↑ in children), SUICIDAL THOUGHTS.
Resp: dyspnea.
Drug-Drug:
Drug-Natural Products:
Drug-Food:
Absorption: 80–100% absorbed from the GI tract when administered orally.
Distribution: Widely distributed to tissues.
Metabolism/Excretion: Converted to phenobarbital and another active anticonvulsant compound by the liver.
Half-life: 3–7 hr.
NDC Code*