63
SCORE
Betaine HCl
Low stomach acid · Digestion · Protein absorption
Tier 2 — Promising
What it is
Temporarily increases stomach acid to help your body digest protein more effectively. Useful for people with confirmed low stomach acid, which is common in older adults and those on long-term acid-blocking drugs. Do not use with anti-inflammatory painkillers or if you have stomach ulcers. Start with a low dose to test your tolerance.
Efficacy
3/5
Safety
3/5
Research
2/5
Onset
4/5
Cost
4/5
Drug-int.
4/5
Dose
650–2,000 mg with protein-containing meals; do not use with NSAIDs or if you have ulcers
Time of day & tips
Take with or just after a protein-rich meal. Never take on an empty stomach or with NSAIDs. Start at 650 mg — heartburn signals adequate acid and you should reduce the dose.
Compare or learn more
Compare with another supplement →
Browse by symptom →
Open the full interactive view →