Hi Ada..
I just looked up Prevacid and angina can be a side effect of that too in a very small percentage, and it can raise your blood pressure which is mabie alot to do with how it helped with the clonidine, one lowers the blood pressure the other raises it.. I have tried neither drug myself, but thought I'd throw in my 2 cents cause I wory.

http://gerd.emedtv.com/prevacid/prev...ffects-p2.html