Are you only on it for 20 days? Cos you might need it for longer...see how it goes. You want to be thoroughly settled down before you do without it. I was on Lansoprazole (the same type of drug) for a few months and needed it (if I tried coming off it, the acid came back). But after a few months my IBS was stabilising and I came off the Lansoprazole ok. Now I just use Zantac on the rare occasions I get acid attacks.