Omeprazole is a nasty drug, my DH is taking it. Stomach acid is very strong but most problems, heartburn and acid reflux are caused by too little stomach acid so that the stomach muscle does not close sufficiently and allows stomach acid to leak out. By increasing the acid, drinking apple cider vinegar, with the mother in it, and lemon juice in water (through a straw to protect tooth enamel) this increases the acid and causes the valve to close properly. I take acv daily and no problems now. I used to have shares in a well known indigestion remedy company! Fine for over two years now.