I also had an eating disorder for years. From a teenager to well into my 30's. BUT I also have a tortuous intestine, meaning it's much longer than I need for a person my size and it results in a slow transit time, causing constipation. BUT I have found that Prunelax, either the mini tabs or the Max strength, keeps me regular. This is the first time in my life and I am now 70 years old! Someone on this site told me about Prunelax and I am forever grateful. It did take a few days to adjust but it has been working wonderfully for me. I hope it would do the same for you. Best wishes. Also, before trying Prunelax, it would be best to get yourself cleaned out. I would suggest Bisacodyl. I take three little tablets and it cleans me out. The begin the Prunelax. I really hope it works for you. Best wishes. Jacque