Everyone - I take the Canadian version. It foams up when chewing it. MUCH better than US version. I've found it on Amazon US where you can purchase: take it before bed if you have breathing issues:

https://www.amazon.com/Gaviscon-Extra-Strength-Antacid-Tablets/dp/B00GO2EG7Q/ref=mp_s_a_1_5?dchild=1&keywords=gaviscon+extra+strength&qid=1626124111&sr=8-5