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Michael B. La Monica, Betsy Raub, Shelley Hartshorn | Journal of the International Society of Sports Nutrition | (2024)

Key Takeaways

Sample Definition And Size

Healthy adult men and women (N = 30; 15 in AG1® group, 15 in placebo group) participated in a 4‑week randomized, double‑blind, placebo‑controlled parallel clinical trial ([pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/39352252/?utm_source=openai)).

Study Type

Randomized, double‑blind, placebo‑controlled clinical trial with parallel design over four weeks ([pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/39352252/?utm_source=openai)).

Conflicts Of Interest

T.N.Z. declared no direct conflict. J.R.T. and T.N.Z. received funding from dietary supplement companies, honoraria for speaking, and consulting fees. T.O.K. and J.R.T. are employees of Athletic Greens International. Remaining authors declared no commercial or financial relationships. Funders had no role in data collection, analysis, or interpretation ([pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/39352252/?utm_source=openai)).

Results Summary

AG1® supplementation enriched probiotic taxa Lactobacillus acidophilus, Bifidobacterium bifidum, L. lactis CH_LC01, and Acetatifactor sp900066565 ASM1486575v1, and reduced Clostridium sp000435835. Functionally, AG1® enriched two pathways and diminished none, whereas placebo enriched six and diminished five. Digestive Quality of Life Questionnaire (DQLQ) showed a trend toward improvement in AG1® group (+62.5%, p = 0.058, Cohen’s d = 0.73) versus a reduction (−50%) in placebo. No significant changes in bowel frequency, stool consistency, or clinical safety markers (CBC, CMP, lipid panel, hemodynamics) were observed. Only one mild adverse event (bloating) in AG1® group and one moderate event (abdominal pain and diarrhea) in placebo group ([pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/39352252/?utm_source=openai)).

Abstract

AG1<sup>Ⓡ</sup> can be consumed safely by healthy adults over four weeks with a potential beneficial impact in their digestive symptom quality of life.

Referenced In

Mar 31, 2026 6:04 AM

I seem to see more and more (?) products that are sort of like multi-vits, but not exactly. Like AG1, Huel Greens, im8, etc. They seem to have a similar "all-in-one" vibe as with multi-vits, but also highlight other benefits (e.g. emphasis on gut health) – and claim to be science-based. Did a quick scan, and it seems like there are studies that show gut health benefits (this study of AG1 for example), but (I think) not so much on the vitamin gaps. (I'm still a sucker "playing it safe" and consume supplements, "just in case"!)