Betaine hydrochloride supplies hydrochloric acid, the same acid your stomach produces. Many people produce less stomach acid as they age, which can make digestion sluggish. Taking betaine HCl with meals can temporarily restore acidity levels to help break down food.
Better stomach acid helps split protein into its building blocks and frees up vitamin B12, calcium, and iron from food so your body can absorb them. People also use it to ease occasional bloating or a heavy feeling after a protein-rich meal.
Capsules are taken alongside meals that contain protein, never on an empty stomach. A low starting dose is common, with gradual increases until the desired effect is reached. Anyone with a history of ulcers, gastritis, or chronic heartburn should avoid it, as should people on antacids or proton pump inhibitors. The extra acid can inflame a sensitive stomach lining.