Hi...I have had IBS since being a kid as well, and meds will affect it...until u get off the meds completely u may continue to flop back and forth....
I had mine under control and went in for surgery and the drugs started it all over again....stick with it...both will be to ur benefit, but also let ur dr know what is going on.
Good Luck
"selma"
opiate withdrawal can cause diarrhoea. i have IBS too and i wasnt aware there was anything to treat it really. it will come and go and if youve been more stressed etc it can get worse. drugs can make it worse so personally i woudnt take any i didnt have to. try peppermint tea and peppermint tablets, and try and find some relaxation time. if you are losing weight you should go discuss it with your doc as you might have some sort of bacterial overgrowth/infection. if you are losing weight because you have no appetitie then you basically have to make yourself eat even if you dont feel like it. thats what i have to do. eat little and often.