Terry, My wife Aliza has PD and cardiac insufficiency. We found that ordinary sinemet caused her deep drops in blood pressure which resulted in fainting as you described.We found that Sinemet CR did not produce this effect but that in order to be effective, the dosage had to be increased since efficiency of delivery of levadopa is significantly reduced. Last summer,Aliza added Tasmar and the BP drops started again.Her Neuro added Motillium to reduce BP drops. Tasmar was a disaster,so she stopped it and then later on stopped the Motillium since at certain times of day her BP is high.By taking regular BP measurements at fixed time of day,you can learn alot about your BP sensitivity.You'll be able to check for orthostatic hypotension(BP drops due to changes of posture), Supine Hypertension(BP rises while prone),and Post-prandial Hypotension(BP drops after eating). Gil Lieberman,CG for Aliza,PD dx 2/95 --------------- Date: Wed, 10 Mar 1999 10:16:58 -0600 From: Terry Kempf <[log in to unmask]> Subject: PD I just signed up for the service. I have been diagnosed as having Parkinson's and a slight heart rhythm problem. Doctors don't seem to think that they are related. Last week I had a blackout. Fell to the floor, but no dizziness, no remembrance of a fall. Just standing one second, lying on the floor the next. I don't know whether it's PD, Sinemet, Artane, or the slight heart problem. I know light headedness is a problem, but I don't think that was what it was. Any ideas? --------------------