The fastest solution may be a teaspoon of baking soda dissolved in a cup of water. But long term you may actually need more stomach acid (called hydrochloric acid) and not less. along with digestive enzymes. If the stomach has too little acid, food will ferment, causing bloating and irritation. Long term use of acid blocking medication may lead to B12 deficiency, causing mental health issues, as well as other nutritional deficiencies. Food is supposed to be broken down by stomach acid so that nutrients can be absorbed. Also, check to see if there are digestive side-effects from the prescription medication you are taking.