Absorption: Completely absorbed after oral administration, but first-pass metabolism results in 45% bioavailability.
Distribution: Unknown.
Metabolism/Excretion: Primarily metabolized by monoamine oxidase-A (MAO-A); minor conversion to an active compound; 14% excreted unchanged in urine.
Half-life: 23 hr.
Contraindicated in:
Use Cautiously in:
Exercise Extreme Caution in:
CV: CORONARY ARTERY VASOSPASM, MI, VENTRICULAR ARRHYTHMIAS, chest pain, myocardial ischemia.
Derm: TOXIC EPIDERMAL NECROLYSIS.
GI: dry mouth, nausea.
Neuro: dizziness, drowsiness, weakness.
Misc: HYPERSENSITIVITY REACTIONS (INCLUDING ANGIOEDEMA), pain.
Drug-Drug:
Drug-Natural Products:
Therapeutic Classification: vascular headache suppressants
Pharmacologic Classification: five ht1 agonists
(Generic available)
NDC Code*