Posted by Jack Boyd (167.206.58.39) on October 25, 1999 at 17:52:58:
In Reply to: Well, part right posted by Bob P on October 25, 1999 at 15:57:21:
Like everything with clusters it ain't simple.
Constriction during an attack ( abortives ) is a good thing.
Constriction between attacks may not be so good - our vessels seek equilibrium - what constricts must dilate - dilate too much and we are off to the races.
Verapamil works as a preventative for many because it does not allow the vessels to constrict in the first place. No constriction - then no resultant dilation.