Natural Factors DGL - 400 mg Deglycyrrhizinated Licorice Root Extract - Aids digestion and treats stomach complaints, including heartburn and indigestion. It soothes and protects the stomach lining, helping to heal ulcers and prevent their recurrence. DGL contains no glycyrrhizin, so it’s completely safe, even for people with high blood pressure. In order to be effective, DGL tablets must be chewed so the DGL mixes with saliva, which activates it in the digestive tract. Taking DGL before every meal is a safe and effective natural alternative to antacids.