My husband uses aluminum hydroxide gel to alleviate his heartburn. He had been experiencing painful reflux after every meal, and other antacids were not helping at all. He tried liquid amphojel and got almost immediate relief.
He did hate the taste of it at first. We started refrigerating it to lessen the power of its flavor, and now he can tolerate it.
When he got a throat infection and went on antibiotics, he had to stop taking the amphojel for awhile. During this time, his heartburn returned, but he just had to endure it until he got off the antibiotics.