Is your current probiotic sourced from soil, dairy, or animals? 🤢
Most likely. And that's the problem.

See Why Thousands Are Switching to Human Strain

Hear from real people who stopped cycling through generic blends — and finally found something that works.

What Happened When They Made the Switch

"My bloating is 80% gone"

★★★★★

After a month, my bloating is 80% gone and digestive pain is cut in half. It even helped with my brain fog. Hands down the most effective thing I've found.

— adubs · Verified Amazon Purchase

"I'm even sleeping better"

★★★★★

I've taken a wide range of probiotics over the years, and I tend to favor those that are targeted, strain-specific, and grounded in clinical science. The Human Native Synbiotic stood out. Not only has it stabilized my gut health, but I'm even sleeping better.

— Verified Customer

"A very big deal for my anxiety"

★★★★★

What caught my eye was that this probiotic encourages the body's natural production of GABA. That's a very big deal for me, because I struggle with anxiety and sleep issues.

— Ms. Bee · Verified Amazon Purchase

See More Reviews on Amazon →

80% Less bloating reported

8B CFU per capsule — clinically dosed

1 Capsule per day. That's it.

Sound familiar? There's a reason generic probiotics aren't fixing it.

Meet Human Strain

The only probiotic made from strains that already live in your gut. Not soil. Not dairy. Not animals. Human.

Start Here

B. adolescentis

Daily Gut Health

Your keystone gut species. Supports digestion, reduces bloating, promotes regularity. 8B CFU with built-in prebiotics.

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B. longum

Mood & Sleep

The gut-brain connector. Supports natural GABA production for calm, focus, and restful sleep. 8B CFU with built-in prebiotics.

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Why It Works When Others Don't

🧬

Human-native strains

Sourced from healthy human microbiomes — not soil, dairy, or animals. Your body recognizes them because they belong there.

🏠

Residents, not tourists

Most probiotics pass through and leave. Human-native strains colonize and persist — they actually move in.

🌱

Built-in "Seed & Feed"

Every capsule includes GOS + XOS precision prebiotics — the specific food your bacteria need to establish and thrive.

Join the People Who Stopped Guessing

Your gut was designed to host these bacteria. It's time to put them back.

Shop B. adolescentis on Amazon →

Shop B. longum on Amazon →

Not sure which one? Start with B. adolescentis — our flagship for daily gut health.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.