For the acute treatment of migraine attacks with or without aura in adults.
Three distinct pharmacological actions have been implicated in the antimigraine effect of the triptans: (1) stimulation of presynaptic 5-HT<sub>1D</sub> receptors, which serves to inhibit both dural vasodilation and inflammation; (2) direct inhibition of trigeminal nuclei cell excitability via 5-HT<sub>1B/1D</sub> receptor agonism in the brainstem and (3) vasoconstriction of meningeal, dural, cerebral or pial vessels as a result of vascular 5-HT<sub>1B</sub> receptor agonism.
There is no direct experience of any patient taking an overdose of Frovatriptan. The maximum single dose of frovatriptan given to male and female patients with migraine was 40 mg (16 times the clinical dose) and the maximum single dose given to healthy male subjects was 100 mg (40 times the clinical dose) without significant adverse events.
Frovatriptan is rapidly absorbed from the duodenum, but has low oral bioavailability.
26 hours
Radiolabeled compounds excreted in urine were unchanged frovatriptan, hydroxylated frovatriptan, N-acetyl desmethyl frovatriptan, hydroxylated N-acetyl desmethyl frovatriptan and desmethyl frovatriptan, together with several other minor metabolites. Less than 10% of frovatriptan was excreted in urine after an oral dose.
* 4.2 L/kg [males] * 3 L/kg [females]
* 220 mL/min [male receiving IV dose of 0.8 mg] * 130 mL/min [Female receiving IV dose of 0.8 mg]