Introducing AG1 PRO

Muscle Strength & Recovery*
Creatine Monohydrate 5g
Advanced Gut Lining Support*
Zinc carnosine 75mg
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Ca-HMB 1.5g
GLP-1 Companion

HEALTH GUIDES: PROBIOTICS

Your Guide to Probiotics

Microscopic view of live probiotic cultures, showing oval and rod-shaped beneficial bacteria cells scattered across a light blue-white field under high magnification

Understanding probiotics

The discussion around probiotics often gets oversimplified. The full picture is much more nuanced.

Probiotics are usually thought of as a simple way to support gut health, but their role is more layered than that. Probiotics interact with the gut microbiome, which plays a part in digestion, nutrient absorption, and communication between different systems in the body. That environment is constantly influenced by what you eat, how you live, and how consistently those habits are maintained.

Taking a closer look at probiotics helps connect how they function within that system and how they fit into a larger pattern shaped by daily habits and nutrition.

Explore probiotics topics

Probiotics are live microorganisms that, when consumed consistently, support the balance of beneficial bacteria in the gut. They're found in fermented foods and in supplement form, and they've become one of the more widely studied areas of nutrition science over the past few decades. That said, a lot gets lost in translation between the science and the supplement aisle. Strain differences matter. So does consistency. So does everything else happening in the gut at the same time—diet, sleep, stress, and the existing makeup of your microbiome all play a role in how probiotics behave and what effects they produce. Use these resources to get a clearer picture of how probiotics function, their benefits, where they fit within a broader approach to your gut health, and how daily supplementation fits into a Foundational Nutrition approach.

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Why AG1?

AG1 was formulated with probiotic support built in from the start. Rather than treating probiotics as an add-on, AG1 combines probiotics with prebiotics and digestive enzymes—ingredients that work together to support a balanced gut environment and help beneficial bacteria thrive. It's a simple, daily way to get consistent probiotic support as part of Foundational Nutrition.*

Start your day with AG1 and support your gut microbiome with a formula designed to work together, every day.*

60,000+ verified 5-star reviews for AG1 products

Amazing

"The energy, the gut, and overall health is making me feel 80% better than I was. I love taking it everyday."

Rowan A., 3/19/25 — AG1 RevIew

New Formula

"I love it! The texture is smoother, mixes better, no grit remaining. Also like the additional vitamins and probiotics are great improvements."

Randa M., 3/13/25 — AG1 RevIew

I Love My AG1

"I continue to love the taste and feel good while drinking AG1 daily. The customer service is outstanding and the company rewards loyal customers with occasional perks. That makes me feel good too!"

Wendy O., 3/17/25 — AG1 Next Gen Review

FAQs

Probiotics are connected to the gut microbiome, which plays a major role in digestion, nutrient use, immune function, and other everyday processes in your body. Getting a fuller understanding of how they fit into those systems helps put your daily habits and nutrition into a better context.

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* 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.

Information on this site is provided for informational purposes only. It is not meant to substitute for medical advice from your physician or other medical professional. You should not use the information contained herein for diagnosing or treating a health problem or disease, or prescribing any medication. Carefully read all product documentation. If you have or suspect that you have a medical problem, promptly contact your regular health care provider.

** AG1 Welcome Kit Offer valid for new AG1 subscribers only. AG1 Pro Welcome Kit included with the first AG1 Pro subscription order only. AGZ Frother Offer valid for first AGZ order only.

According to IQVIA Pro Voice Survey of 248 primary care physicians in December 2025.

††Free shipping on subscription purchases for new U.S. customers only.

  1. In a triple-blind, randomized, placebo-controlled parallel-designed clinical trial evaluating nutrient biomarkers and microbiome shifts in 105 healthy adults ages 20-59 over the course of 12 weeks using the AG1 Next Gen formula.
  2. In a double-blind, randomized, placebo-controlled 2-week crossover clinical trial assessing nutrient gaps and microbiome shifts in 20 active adults ages 19-37 using the AG1 Next Gen formula.
  3. In a double-blind, randomized, placebo-controlled 2-week crossover clinical trial assessing nutrient gaps and microbiome assessments of 40 healthy adults with occasional GI distress ages 26-59 over the course of 4 weeks using the AG1 Next Gen formula.
  4. In a double-blind, randomized, placebo-controlled crossover clinical trial assessing nutrient gaps and bioavailability in 16 healthy adults ages 18-42 over the course of 8 hours using the AG1 Next Gen formula.
  5. In a third-party, single-arm, closed label interventional study of 104 healthy adults ages 25-59 assessing self-perceived efficacy of AG1 Next Gen over 3 months.

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