Dealing with Acid Reflux: Need Advice

Hey guys. I have bad acid reflux. I already take omeprazole daily, and that helps with the heartburn but in the last few months I've been having g heartburn despite the meds on top of bloating and constant burping. my Dr won't tell what else I can. they told ne to add one vitamin, cut this out if diet, even to lose weight and I'm working on all of that bit is there another acid reflux to add with oneprazole I can ask my Dr about or a specific vitamin or mineral to try