After stopping antacid my gas symptoms resolved

Hello everyone , I am 19 , male , diagnosed with left side UC and currently in flare. I have urgency and pain issues and a lot of gas issues. I take an antacid in the morning before breakfast on empty stomach. Its name is CYRA -IT and is composed of - Rabeprazole, Itopride.I am taking 4800 mesalamine , 100 mg azathioprine and folvite tablet also daily.
I have been taking it since 3 months.Before this one I was taking Pantocid 40. I read online that antacids can affect my kidney and other health if taken for a longer time.
Yesterday and today , I forget to eat the antacid and I feel like my gas symptoms has reduces. Even my urgency is alzo reduced.
I Request you all to please help me and tell can antacid be a problem in UC? Can stopping it be good for UC? Or maybe I am wrong? And some other lifestyle or diet changes may have resulted in getting symptoms better?

Certain antacids (or acid blockers - PPI’s) like Nexium, Pepcid, Prilosec, etc are known to give me diarrhea if used for more than a few days. Sometimes they can cause more issues than they are treating.