Formerly Acid Relief For temporary relief of occasional indigestion and heartburn. Acid Block is a combination of nutrients designed to provide relief of intermittent heartburn and indigestion. Alginic acid and sodium alginate react with saliva and gastric acid to form a foamy froth or alginic raft that floats on top of the gastric contents and acts as a barrier to acid and food reflux. Slippery elm and deglycyrrhized licorice act as demulcents which are soothing to the alimentary canal. Contains no: yeast, dairy, eggs, gluten, corn, wheat, starch, artificial colors or preservatives. Other ingredients: fruit sugar, proprietary FOS, chicory root/mung bean extract, stearic acid. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.