Meta-analysis of 53 RCTs (n=5,545): multi-strain probiotics significantly improved IBS symptoms vs placebo.
Ford AC, et al. Am J Gastroenterol. 2018;113(Suppl 2):1-18.PubMed
Gut
60 capsules · 30-day supply
30 servings
Probiotic 40B
40 billion CFU · 10 clinical strains.
A multi-strain blend at 40 billion CFU, delivered via delayed-release capsule to survive stomach acid and reach the colon, where probiotics actually need to be.
$49.00 one-time · ships free
- Supports digestive regularity
- Strengthens gut barrier function
- Supports immune resilience
Free shipping
On first orders
30-day trial
Satisfaction guarantee
Third-party tested
Every batch
4.9 / 5
42,000+ members
Plain English. No hand-waving.
Multi-strain probiotics colonize the lower GI tract via MAKTREK® delayed-release. Marine polysaccharides feed the strains; FOS prebiotic fiber supports populations long-term.
Every milligram,
on the panel.
This is the printed label on the bottle, transcribed. Compare it to anything else you take — the dosing speaks for itself.
10 strains · 40B CFU
Lactobacillus & Bifidobacterium blend
Microbiome support
200 mg
Prebiotic fiber (FOS)
Feeds probiotics
Supplement Facts
- Serving Size
- 2 Capsules
- Servings Per Container
- 30
Amount Per Serving
Proprietary Blend (40 Billion CFU)
805 mg
*
MAKTREK® 3D (Bi-Pass Technology)
Lactobacillus acidophilus (La-14)
Bifidobacterium lactis (Bl-04)
Lactobacillus plantarum (Lp-115)
Lactobacillus paracasei (Lpc-37)
Complex Marine Polysaccharide
60 mg
*
Fructooligosaccharide (FOS)
34 mg
*
* Daily Value (DV) not established.
Other ingredients: Hypromellose (vegetable capsule), Rice maltodextrin, L-Leucine.
Your first 12 weeks
on Probiotic 40B.
These aren't marketing promises, they're the patterns we see across thousands of members, week by week.
1
Digestion stabilizes. Regularity improves within days.
2
Bloating noticeably reduces. Energy more even.
3
Immune resilience improves — fewer minor colds, faster recovery.
4
Microbiome diversity supported long-term as long as you stay on it.
The actual
papers.
Multi-strain probiotics colonize the lower GI tract via MAKTREK® delayed-release. Marine polysaccharides feed the strains; FOS prebiotic fiber supports populations long-term.
Consensus: specific probiotic strains reduce antibiotic-associated diarrhea by ~60% and acute infectious diarrhea by ~25%.
Sanders ME, et al. Nat Rev Gastroenterol Hepatol. 2019;16(10):605-616.PubMed
These statements reflect the published literature. They have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
What members say about Probiotic 40B.
5.0 / 5
Member rating
42,000+
Active members
94%
Re-order rate
"I've tried every probiotic on the market. This is the first one that actually changed how I feel — my afternoon brain fog just stopped."
Yuki H.
Los Angeles, CA · Member · 5 months
"Bloating after meals is gone. I didn't realize how much it was affecting me until it wasn't."
Michael K.
Minneapolis, MN · Member · 8 months
"Haven't had a serious cold all winter. My family had two waves of flu, I dodged both. Coincidence? Maybe. But I'm not stopping."
Camille D.
Montreal, QC · Member · 11 months
Reviews from verified members. Individual results vary. We don't curate reviews — we publish what comes in.
What we test for,
in every batch.
We don't outsource quality. Every batch of Probiotic 40B is independently tested before it ever reaches a bottle. Certificates of Analysis are available on request.
Confirms each ingredient matches its label.
Verifies actives are at the dose we promise.
Lead, arsenic, mercury, cadmium — all below FDA-safe limits.
No pathogens. CFU counts verified at end-of-shelf-life.
Before you start.
Specific to Probiotic 40B, plus everything about subscription, returns, safety, and how iriglow works.
MAKTREK® 3D delayed-release technology + shelf-stable strains means CFU counts remain at 40 billion through end-of-shelf-life at room temperature. Verified by third-party testing.
