Reflux causes your gullet (food pipe) to become inflamed and painful. Symptoms may include a painful sensation in the chest rising up to your throat or a sour taste in the mouth. Emazole Control works by reducing the amount of acid that your stomach produces for at least 24 hours. It is a film-coated tablet. Emazole does not offer immediate results and it may be necessary to take the capsules for 2-3 days of consecutive use before symptoms begin to improve.