Is Kefir safe to take daily?

Kefir 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

Kefir

MODERATE EVIDENCESupplementLast updated

AVELOR SUMMARY

Kefir is a fermented milk drink containing 30-50 unique microbial species (far more diverse than yogurt's 2-3). Contains: Lactobacillus kefiri (unique to kefir), kefiran (anti-inflammatory polysaccharide), and bacteriocins (antimicrobial peptides). A 2015 meta-analysis found kefir improved lactose digestion, bone density markers, and lipid profiles. Kefir grains also produce vitamin K2 (MK-7) during fermentation. Water kefir is the dairy-free alternative. The microbial diversity is kefir's unique advantage over commercial probiotics. --- *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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