Posted by Bob P on April 20, 1999 at 16:00:19:
In Reply to: Re: please pray tomorrow- induced CH posted by Thom S on April 20, 1999 at 13:31:56:
I believe they induce the HA with nitro-glycerine tablets. They dialate the blood vessels and naturally the reverse is to constrict the blood vessels with ergots or triptans.