Mother·Culture
Gut–brain · Stress & mood

Calm

Led by B. longum 1714 — studied for stress resilience along the gut–brain axis — with supporting gut–brain strains.

Steadier days, softer edges.

115B CFU at bottling6 strains$99 / mo
Plain L. reuteri probiotic Greek yogurt in a glass jar — Mother Culture Calm mix
Best for

Stress, mood, the wired-but-tired feeling.

The postbiotic layer

Fermentation-derived metabolites linked to the gut–brain conversation — support that persists past the live dose.

What’s cultured in

The strain set

Every strain is named to its designation, with the structure/function it’s included to support. The two base cultures are the classic Greek-yogurt ferment.

01
Bifidobacterium longum
1714

Supports stress resilience through the gut–brain axis.

02
Lactobacillus reuteriFlagship
DSM 17938 + ATCC PTA 6475

Supports the gut–brain axis, calm mood and oral & skin health.

03
Lacticaseibacillus rhamnosus GG
ATCC 53103

Supports digestive comfort and everyday immune resilience.

04
Lactobacillus acidophilus
NCFM

Supports lactose digestion and a balanced gut.

05
Streptococcus thermophilusBase
Greek base culture

Classic yogurt culture — supports lactose digestion.

06
Lactobacillus delbrueckii subsp. bulgaricusBase
Greek base culture

Classic yogurt culture — the foundation of every batch.

Who it's for

Is Calm your mix?

People navigating stress, mood, or the wired-but-tired feeling. Led by B. longum 1714, studied in connection with stress resilience along the gut–brain axis, with supporting gut–brain strains.

What to expect
Week 1Start the daily ritual — one ~30g serving a day. Your gut meets the culture; keep it consistent.
Week 2The habit settles in. Live cultures and postbiotics are working with your existing microbiome.
Weeks 3–4Most people judge a daily probiotic food over a few weeks of steady use, not a few days.
OngoingReassess against your goal. Stay on your mix, or retake the intake and switch — it’s flexible.
In the box

Cold jars. One certificate.

✓4–6 × 500g full-fat Greek, in glass
✓Cultured to order, delivered cold
✓This batch’s certificate of analysis
✓A daily functional serving
Sample certificate of analysis
BatchMC-CAL-0612
CFU at bottling115B / serving
Listeria · Salmonella · E. coliNOT DETECTED
Yeast / mouldWITHIN SPEC
Status✓ RELEASED

THIRD-PARTY VERIFIED · GUARANTEED LIVE COUNT AT BOTTLING · SCAN THE JAR FOR YOUR BATCH

Questions

Calm, answered.

Certain strains have been studied in connection with the gut–brain axis. We frame this as support for normal function and stress resilience — not as a treatment for any mental-health condition.

Yes, as a supporting strain — but Calm is led by B. longum 1714, where the gut–brain research is strongest.

Whenever you’ll do it consistently. Many people fold it into a calm morning or evening ritual.

Keep exploring

Other cultures

Plain probiotic Greek yogurt, unsweetened — Mother Culture Everyday mix

Everyday

Your daily living baseline.

View mix
Plain probiotic Greek yogurt, unsweetened — Mother Culture Digestive Comfort mix

Digestive Comfort

For a calmer, lighter gut.

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Plain probiotic Greek yogurt, unsweetened — Mother Culture Daily Immune mix

Daily Immune

Resilience, one serving a day.

View mix