I HAVE BEEN TAKING AMITIZA 8 MG 2XDAY AND BENTYL

i HAVE BEEN TAKING AMITIZA 8 MG 2XDAY AND BENTYL 20 MG 2XDAY FOR IBS-C FOR ALMOST A YEAR NOW. AT FIRST IT WORKED LIKE A MIRACLE WITH REGULAR BOWEL MOVEMENTS AND NO CRAMPING. OVER THE PAST 2 MONTHS I HAVE SEEN A PATTERN FORMING OF A FEW DAYS OF CONST. THEN A FEW DAYS OF DIAR. THEN OK FOR A FEW DAYS THEN CYCLE BEGINS AGAIN. I HAVE BEEN THINKING THAT MAYBE I COULD DO WITHOUT ANY MEDICATION AND SEE IF TAKING PRILOSEC AND ALIGN MIGHT BE A BETTER WAY. IF I STOP THE AMITIZA AND BENTYL WILL I HAVE ANY WITHDRAWAL TYPE SYMPTOMS OR CREATE A BIGGER PROBLEM FOR MYSELF?