YES, I USUALLY HAVE NO PROBLEM, SINCE 1/18TH I STARTED A DIET PLAN AMBEIN 2 PILLS A DAY. ON WED LAST I STARTED TO HAVE LOWER BACK PAIN & WAS UNABLE TO GO AS USUAL. I TOOK RASINS, GASX, CLUB SODA , BICOB. AND CRANBERRY JUICE. I DID GO SOMEWHAT BUT TH BOWEL MOVEMENT WAS HARD SMALL AND DRY.............WHAT ELSE CAN I DO, I PLAN ON EATING FISH AND SPINISH TONITE..........I WAS THINKING OF BUYING COLACE. & I STOPED THE DIET PILL 2 DAYS AGO.