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Understand what you're taking

Dr. Stewart's notes on how this formula works and who it's for.

How It Works

Your FUT2 gene affects the sugars on your gut lining that good bacteria feed on, which is why some people need more help keeping them established.*

Lactobacillus and Bifidobacterium species help digest food, produce beneficial compounds and keep less helpful microbes in check.*

Saccharomyces boulardii is a beneficial yeast that supports gut balance.*

Akkermansia supports the protective mucus layer of the gut, and Clostridium butyricum produces butyrate, the main fuel for colon cells.*

Is This Right for You?

A good fit if you

  • Your NineTwo GI report recommends Probiotic Boost (microbiome stability)
  • You're an adult looking for broad-spectrum probiotic support
  • One capsule a day with a meal fits your routine

Talk to your provider first if you

  • Have a weakened immune system or a serious illness
  • Take antifungal medication. It can affect S. boulardii, which is a yeast.
  • Are pregnant or nursing

Good to know

Take it with a meal.

Some people notice gas or bloating in the first week as the gut adjusts.

How to Take It

Take 1 capsule per day with a meal, or as directed by your healthcare practitioner.

Probiotic Boost

Probiotic Boost

Doctor's Formulation Rationale

This is my broad-spectrum adult probiotic. Beyond 50 billion CFU of Lactobacillus and Bifidobacterium, it includes Saccharomyces boulardii, a beneficial yeast, and three next-generation species. Akkermansia supports the gut's protective mucus layer. Clostridium butyricum makes butyrate, the main fuel for the cells lining the colon. Bifidobacterium infantis rounds it out. When a report shows someone has trouble keeping good bacteria established, I want to cover as much ground as possible with one capsule a day.

— Kendal Stewart, MD
$58.20 USD
$58.20 USD
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Why people take it

  • Supports a healthy balance of gut bacteria*
  • Supports the gut lining and intestinal barrier*
  • Supports healthy digestion and regularity*
  • Supports healthy immune function*
  • One capsule a day with a meal

Supplement Facts & Ingredients

Serving Size: Serving Size: 1 Capsule, Servings Per Container: 30
Active Ingredient Amount Per Serving % Daily Value
Probiotic Blend (Lactobacillus plantarum, Bifidobacterium lactis, Lactobacillus rhamnosus, Lactobacillus acidophilus, Lactobacillus paracasei, Lactobacillus reuteri, Bifidobacterium bifidum) 323 mg (50 billion CFU †) *
Saccharomyces boulardii 200 mg (3 billion CFU †) *
Next Generation Probiotic Blend (Akkermansia muciniphilia, Bifidobacterium infantis, Clostridium butyricum) 20 mg (500 million AFU ††) *
** Daily Value not established, † Colony-Forming Units, †† Active Fluorescent Units
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GENETIC PANEL MATCH · GASTROINTESTINAL ANALYSIS

Your genes may already be pointing you here

Probiotic Boost is one of the formulas our Gastrointestinal Analysis can recommend. The report looks at the genes that shape how well good bacteria grow in your gut, then shows where your gut may need support.

View DNA Test Panel ($169)

FUT2

The sugars on your gut lining that good bacteria feed on

A broad 11-species blend helps more good bacteria take hold.

Your genes don't diagnose anything. They show tendencies, and your report turns them into a plan.

Prefer a chewable? See Probiotic Boost Chews →

*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.

Board–Certified MD Founded
Board–Certified MD Founded
30+ years treating complex chronic patients
CLIA–Certified US Lab
CLIA–Certified US Lab
High-depth genetic sequencing precision
Active Methylated Co–Factors
Active Methylated Co–Factors
Bioavailable nutrients that bypass SNP blocks
100% Third–Party Batch Tested
100% Third–Party Batch Tested
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Frequently Asked Questions

Personalized wellness through genetic testing, education, and targeted supplementation.
Our advanced panel tests key enzymes including MTHFR and COMT to uncover pathway bottlenecks and optimize energy production.
Evaluates hepatic phase I and phase II clearance genes to optimize endogenous glutathione pathways and cellular detox.
A non-invasive cheek swab collected at home is analyzed at our CLIA-certified laboratory with results available in 2–3 weeks.
Comprehensive clinical panels engineered specifically to guide targeted nutrition, co-factor dosing, and bio-individual lifestyle protocols.
Yes, our bioavailable co-factor formulas are crafted specifically to bypass the exact SNP blocks identified in your panel.