I guess I would want to know how you know it is gas and not a problem with the connection of stomach to esophogus. Protein drinks create a lot of gas, so much so that I get nauseated after a few sips of protein drink. Sip means barely enough to swallow, not half fill mouth of fluids. Gas-X helps all kinds of gas, in stomach or intestines. SO what are the actual symptoms to lead you to the belief it is gas. UGI will be able to see if there are any leaks.