Comparison & reviews

Buttermilk or kefir: which to choose for digestion, microbiota and tolerance?

Need to quickly choose between buttermilk and kefir based on digestion, tolerance, and gut microbiota goals. Updated 06/04/2026

Are you hesitating between buttermilk and kefir ? Here is a clear answer, a decision chart and practical advice (dosage, uses, mistakes to avoid) to help you choose according to your digestion and goals.

Buttermilk or kefir

Key points to remember

The right choice is the one that you digest well and can consume regularly: buttermilk = sweetness and cooking; kefir = diversity of cultures (often) and a more "active" drink.

How to choose

Buttermilk or kefir : if you want a simple and mild option, choose buttermilk. If you primarily want to diversify the live cultures (bacteria and yeasts) and you tolerate it well, choose kefir.

Quick tip

Tip: start at 50–100 ml/day for 3–4 days, then increase to 150–250 ml if all goes well (especially with kefir).