Dietary Supplement. Removes acid from food and drinks. Drug free. No drug side effects. Avoid occasional heartburn & bladder discomfort caused by foods. Reduces up to 95% of acid from top trigger foods (A single Prelief caplet reduces the acid in a 6 oz cup of coffee by 95%. Visit www.prelief.com for a list of foods and % acid reduction by using Prelief). Enjoy your favorite meals without flare-up!