vasoconstriction
The acute antimigraine effects of this       second-generation of triptans seem to be obtained in largely the same way as with       sumatriptan: by cranial vasoconstriction and inhibition of trigeminovascular       activation from both peripheral and central projections.
The acute antimigraine effects of this       second-generation of triptans seem to be obtained in largely the same way as with       sumatriptan: by  @OBJECT$  @PREDICAT$  @SUBJECT$  and inhibition of trigeminovascular       activation from both peripheral and central projections.