Norvasc
"I have been taking Amlodipine (Norvasc) for about 2 months.

Norvasc (Amlodipine Besylate 5 mg) did lower my blood pressure from 150's over 80's to 120's over 60's.  That's great.  

Problem is with side effects every day.  Intestinal cramps, diarrhea, gas. Begins about 5 hours after I take the pill.  Stomach (intestines ?) roll constantly for about 3 hours. 

I am going to try splitting the pills in half and see if lower dosage stops the side effects.  If not, I guess I'll go back to the doctor and try something else for blood pressure.  It seems like all of these blood pressure pills have side effects of one kind or another."