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Supplement Review

AG1 by Athletic Greens — Full Review

An independent, evidence-based evaluation of AG1’s formulation, ingredient quality, third-party testing and real-world value.

92

Vital Score™ / 100

Editor's Choice

Quick Verdict: AG1 is one of the most complete daily foundational nutrition supplements available, backed by solid ingredient sourcing and third-party testing — though its premium price point is a consideration.

Pros

✓ Comprehensive all-in-one daily nutrition formula

✓ Uses whole-food sourced ingredients where possible

✓ Independently tested by NSF Certified for Sport

✓ Convenient single-scoop daily format

✓ Transparent about sourcing and manufacturing

Cons

✕ Premium price point compared to single-ingredient supplements

✕ Proprietary blend limits exact dosage transparency for some ingredients

✕ Green flavor profile may not suit everyone

Overview

What Is AG1?

AG1 by Athletic Greens is an all-in-one daily nutritional supplement combining vitamins, minerals, probiotics, adaptogens and whole-food sourced ingredients into a single daily scoop. It’s positioned as foundational nutritional insurance rather than a replacement for a balanced diet.

How It Works

How AG1 Supports Daily Health

AG1 combines 75 vitamins, minerals and whole-food sourced ingredients formulated to support energy, gut health, immune function and healthy aging. The formula includes digestive enzymes and probiotics intended to support nutrient absorption alongside foundational micronutrients.

Ingredients

Key Ingredients & Sourcing

Vitamin C & Zinc: Support immune function with clinically studied dosages.

Probiotics & Digestive Enzymes: Support gut health and nutrient absorption.

Adaptogens (Ashwagandha, Rhodiola): Included to support stress response, with moderate supporting evidence.

Whole-Food Sourced Greens: Spirulina, spinach and other whole-food ingredients provide additional micronutrients.

Scientific Evidence

What the Research Says

Individual ingredients in AG1 have published research supporting their roles in immune function, digestion and micronutrient status. As with most multi-ingredient formulas, there is limited direct clinical research on the complete blend itself, which is a common limitation across this product category. AG1 is manufactured in NSF and informed-sport certified facilities, and batches are tested for banned substances and heavy metals.

Benefits & Limitations

Where AG1 Excels and Falls Short

Benefits: Convenient way to cover broad micronutrient bases, supports digestive and immune health, high manufacturing and testing standards.

Limitations: Higher cost than single-ingredient supplements, proprietary blends limit exact per-ingredient dosage transparency, not a substitute for a balanced diet.

Possible Side Effects

What to Expect

Most users tolerate AG1 well. Some report mild digestive adjustment (bloating or looser stools) during the first 1-2 weeks, which is common with probiotic and fiber-containing formulas. Those with specific allergies should review the full ingredient list before use, and anyone pregnant, nursing, or on medication should consult a healthcare provider first.

Who Should Consider This

Is AG1 Right for You?

AG1 is best suited for people who want a convenient foundational nutrition product to fill dietary gaps, particularly those with inconsistent diets or high daily demands. It may be less necessary for people already eating a highly varied, nutrient-dense diet, or for those seeking to address a single specific deficiency, where a targeted supplement may be more cost-effective.

FAQ

Frequently Asked Questions

Is AG1 backed by scientific research?

Many individual ingredients have published research, though comprehensive clinical trials on the complete blend are limited, which is typical for multi-ingredient supplements.

How does AG1 compare to a multivitamin?

AG1 combines vitamins, minerals, probiotics and adaptogens in one formula, offering broader coverage than a standard multivitamin, at a higher price point.

Is AG1 third-party tested?

Yes. AG1 is manufactured in NSF and Informed-Sport certified facilities and tested for banned substances and heavy metals.

How long until I notice benefits?

Most users report noticing digestive and energy changes within 2-4 weeks of consistent daily use.

Editorial Transparency

This review was independently researched and written by our editorial team using our standard evaluation methodology. Vital Optimum may earn a commission if you purchase through links on this page — this never influences our Vital Score or editorial opinion. See our Affiliate Disclosure for details.