Is Methionine safe to take daily?

Methionine is rated "Generally Safe" based on clinical evidence. Always consult your healthcare provider before starting any supplement.

Ingredient Research

Graded against 173,636 supplements + 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, NIH DSLD

Methionine

MODERATE EVIDENCEAmino AcidLast updated

AVELOR SUMMARY

L-methionine is an essential amino acid and the body's primary methyl donor (via SAMe). It's also the precursor to cysteine → glutathione. PARADOX: methionine restriction extends lifespan in animal models (methionine restriction activates autophagy and reduces IGF-1), but methionine supplementation supports methylation, detoxification, and antioxidant synthesis. High methionine intake (without adequate B6, B12, folate) raises homocysteine (cardiovascular risk). Used therapeutically for: liver detoxification (200-1,000mg/day) and UTI prevention (urinary acidifier at 500mg 3x/day). --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*

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Independently graded against 173,636 indexed supplements with 177 published clinical interactions, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated:

Not medical advice. Based on published clinical research and systematic reviews.

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