Just got back. They gave me a prescription for Zantac 300mg. They told me to take it once a in the morning and once at night. We'll see. Then they insisted that I take a blood test, which I did, to check for this certain bacteria that cause heartburn. When they see my test levels then what do I say??? I bought the bottle of T-rex with me to show the doc. He read the ingredients and actually gave it a thumbs up. I was surprised. Usually Doc's are adverse to stimulants but T-rex has no ephedrine or any other dangerous stimulants in it. It also has a good amount of vitamin B.