From: Efficacy of frovatriptan in the acute treatment of menstrually related migraine: analysis of a double-blind, randomized, cross-over, multicenter, Italian, comparative study versus rizatriptan
Frovatriptan
Rizatriptan
p
Pain free episodes at 2 hours
 Mild
3 (20)
8 (40)
NS
 Moderate-severe
12 (80)
12 (60)
Pain free episodes at 24 hours
2 (6)
13 (24)
<0.01
31 (94)
23 (76)