733 clinicians

Bioma Probiotics

It's not your willpower. It's your cortisol.

Stress keeps your body storing fat around your belly - even when you're doing everything right. Bioma targets the gut bacteria behind it.

Cancel anytime

Guaranteed safe checkout

Shop Now

14-day money-back guarantee · Free shipping · Cancel or change anytime

14-day guarantee
Free shipping
Recommended by 733 clinicians
2M+ bottles sold

Benefits of our ingredients are covered in

Formulated to work with your hormones — not against them.

Calms cortisol
Decreases cortisol, your body's main stress hormone.
Targets cortisol belly
Burns stubborn "cortisol belly" fat.
Stops the 4pm crash
Restores all-day energy - no crash, no stimulants.
Quiets cravings
Destroys stress-driven cravings and food noise.

Delayed-release capsules · Stimulant-free · Vegan · Non-GMO

The paradox

It's not that you're doing it wrong. It's that your body changed the rules.

A woman standing thoughtfully by a bright window

Close crop of a soft midsection with hands resting at the waist

A woman sitting quietly on the edge of her bed in the morning

At some point, the things that always worked stopped working. The same walks, the same salads, the same effort — and the scale won't move, especially around your middle.

Here's the part no one told you: chronic stress keeps cortisol elevated, and elevated cortisol signals your body to hold onto belly fat and slow the systems that help you let it go. So dieting harder and pushing through tougher workouts can actually raise cortisol further — quietly working against the very results you're chasing.

It's not a willpower problem. It's a hormone-and-gut problem — and that's something you can actually change.

Squishy on top, firm underneath, and stubborn no matter what? That's the pattern women describe as "cortisol belly."

The mechanism

Your gut helps set your stress thermostat.

1
Stress keeps cortisol high.
Ongoing stress — plus hormonal shifts — can keep cortisol elevated, which signals the body to store belly fat and cling to it.
2
High cortisol throws off your gut.
Elevated cortisol disrupts the balance of gut bacteria that help regulate metabolism, appetite, and inflammation.
3
A balanced gut helps calm the loop.
Rebalancing key gut bacteria supports a steadier stress response — so your body can stop holding on and start letting go.

This is why Bioma starts in the gut, not on your plate.

The Cortisol Cycle

Why the Belly Fat Won't Move

Stressed out

Cortisol rises

Gut breaks down

Body starts storing fat

Most "cortisol fixes" treat the symptom. Bioma treats the cause.

	Cortisol pills	Restrictive dieting	Doing nothing
Targets the gut-cortisol root cause
Won't raise stress the way hard dieting can	—		—
Supports stubborn belly-fat release	—
Stimulant-free (no jitters or crash)
Delayed-release, reaches the gut intact		—	—
Backed by clinically studied strains	—
No restrictive diet required

Bioma

Targets the gut-cortisol root cause
Won't raise stress the way hard dieting can
Supports stubborn belly-fat release
Stimulant-free (no jitters or crash)
Delayed-release, reaches the gut intact
Backed by clinically studied strains
No restrictive diet required

Cortisol pills

Targets the gut-cortisol root cause
—Won't raise stress the way hard dieting can
—Supports stubborn belly-fat release
Stimulant-free (no jitters or crash)
Delayed-release, reaches the gut intact
—Backed by clinically studied strains
No restrictive diet required

Restrictive dieting

Targets the gut-cortisol root cause
Won't raise stress the way hard dieting can
Supports stubborn belly-fat release
Stimulant-free (no jitters or crash)
—Delayed-release, reaches the gut intact
Backed by clinically studied strains
No restrictive diet required

Doing nothing

Targets the gut-cortisol root cause
—Won't raise stress the way hard dieting can
Supports stubborn belly-fat release
Stimulant-free (no jitters or crash)
—Delayed-release, reaches the gut intact
Backed by clinically studied strains
No restrictive diet required

Comparison reflects Bioma's formulation approach; individual results vary.

What's inside

Three actives. One job: break the gut-stress cycle.

A prebiotic, probiotic, and postbiotic working together to rebalance the gut behind your cortisol response.

Prebiotic
iXOS™ Xylooligosaccharide — 100mg
A next-generation prebiotic that selectively feeds the gut bacteria linked to cortisol regulation - without the bloating fibers like inulin can cause.
Postbiotic
Tributyrin as Corebiome™ — 90mg
Strengthens and calms the gut lining — where much of the gut-cortisol conversation happens.
Probiotic
Bifidobacterium Blend — 9 Billion CFU
Three targeted strains — B. longum, B. breve, and B. lactis — selected specifically for their role in cortisol balance, not just general digestion.
Delivery
Delayed-release vegan capsule
Built to survive stomach acid so the live cultures actually reach your gut intact — where they can do their work.

Vegan · Non-GMO · Gluten-free · Stimulant-free · Free from all 9 top allergens

What we leave out

Because your body's already under enough stress.

Stimulants & caffeine
No jitters, no crash, no extra load on an already stressed system.
Added sugar
Nothing that spikes blood sugar or feeds the cravings loop.
Synthetic fillers & harsh laxatives
No dyes, no bulking agents, nothing that forces your gut.

How it works

What the first weeks can feel like

Week 1
First signs of eased cravings and less stress-driven hunger.
Week 2-4
Less bloating, steadier energy, cortisol belly starts to shift.
Week 8+
Peak results: decreased cortisol, lost stubborn belly fat, restored energy and sleep.

Consistency matters most — the system strengthens the longer you stay with it. Individual results vary.

Clinician's Choice

Recommended by 733 clinicians

Dr. Nancy Esper

Internal medicine — Bellaire, TX

Expertise: Internal medicine
Location: Bellaire, TX
Years in practice: 31

This clinician and many more recommend Bioma.

Claim 60% off + free shipping

Reviews

What real people are saying

4.8

4.8 · 8,800+ reviews

5★68%
4★19%
3★7%
2★3%
1★3%

5.0
The 3pm crash is gone
June 2026
I stopped needing a nap by mid-afternoon. My waistband feels looser too. I wasn't sure a probiotic could do this.
Denise Verified· Was this helpful? 42
5.0
My gut finally calmed down
June 2026
Work stress lives in my stomach. Six weeks in, the bloating is way down and my middle isn't as hard and round as it was.
Robert Verified· Was this helpful? 38
5.0
Less stressed, less bloated
May 2026
The constant bloating after dinner has calmed right down. I feel less on-edge in general, which I did not expect.
Yvette Verified· Was this helpful? 31
4.0
Steadier days, fewer snack raids
May 2026
I'm not raiding the pantry at 9pm anymore. Took about a month before I really noticed, but it stuck.
Miguel Verified· Was this helpful? 27

Real stories. Real results.

"I kept blaming myself — thinking I just needed more discipline. Turns out my body was working against me. A few months on Bioma and the 'stress belly' I'd had for years is finally going down."
— Denise W.
"Twenty years of desk stress went straight to my gut. This is the first thing that settled it without wiring me up."
— Marisol T.
"The bloating settled first, then the afternoons stopped falling apart. It feels like my body finally stopped fighting me."
— Bridget L.
"I stopped chasing the next diet. Calmer digestion, steadier mood, and my clothes fit differently after a couple of months."
— Renata P.