FSC Betaine Hydrochloride & Pepsin aids people who are unable to produce sufficient stomach acid to maintain protein digestion & nutrient absorption. FSC Betaine Hydrochloride & Pepsin helps in the symptomatic relief of indigestion, heartburn, joint probelms, eczema, Coeliac disease & allergies. Betaine Hydrochloride is a source of hydrochloric acid, a necessary secretion of the stomach to maintain protein digestion & nutrient absorption. Pepsin is protein-digesting enzyme found naturally in the stomach. Both these ingredients work together to aid stomach acid production.