Betaine HCL & Pepsin by Thorne

If you’re searching for betaine HCl because meals sit heavy, you bloat after protein, or you burp undigested food, you’re the use case. It’s also reasonable if Vitamin B12 or Ferritin (iron storage) run low despite eating well, since low stomach acid impairs absorption. Plant-forward eaters, adults over 40, and long-term users of acid suppressors in the past often land here. If you currently have frequent reflux burning, this is usually the wrong tool.

Stomach acid is the ignition for digestion. Betaine HCl increases stomach acidity, which converts pepsinogen into pepsin (the enzyme that breaks protein into smaller pieces). The lower pH also helps minerals like iron, calcium, magnesium, and zinc dissolve so they can be absorbed, and it curbs bacterial overgrowth higher up in the gut. Adequate acidity signals the small intestine to release bile and pancreatic enzymes, so downstream digestion runs on time.

Take 1 capsule with the first bites of a protein-containing meal; increase to 2 if one doesn’t change post-meal heaviness within a few days. Mid-meal timing works best, and avoid taking it without food. Most people feel lighter digestion within the first week; nutrient markers like Vitamin B12 or Ferritin shift over months. If you feel warmth, burning, or reflux, reduce the dose or stop.

Skip this if you have a history of stomach or duodenal ulcers, active gastritis, chronic reflux with esophageal damage, Barrett’s esophagus, or an untreated H. pylori infection. Avoid during pregnancy and breastfeeding, and in children. The pepsin is porcine, so it’s not suitable for vegetarians, vegans, or those avoiding pork for religious or allergy reasons. Post–bariatric surgery: use only with clinician guidance.

Don’t pair betaine HCl with acid-suppressing drugs like proton pump inhibitors (omeprazole, esomeprazole) or H2 blockers (famotidine), or with antacids; they directly oppose its effect. Use caution if you take daily NSAIDs (ibuprofen, naproxen), aspirin, corticosteroids, or bisphosphonates, which raise ulcer risk. If your hs-CRP (an inflammation marker) is elevated from reflux irritation, address that first. Thorne’s quality standards apply here; dose still needs clinical sense.

How do you know if low acid is the issue? The Heidelberg gastric pH test is the gold standard; routine labs don’t measure stomach acid directly. Will this fix reflux? If reflux is from true over-acid, no. If it’s from slow, poorly acidified emptying, careful low dosing can help, but stop if burning worsens. Can it replace digestive enzymes? It complements them; pepsin handles protein, while separate enzyme blends address carbs and fats.