SuppCo Tested | What We Learned Testing 44 Supplements Purchased on Amazon.com
50%+ of the Supplements that SuppCo Bought on Amazon Failed to Meet Active Ingredient Label Claims
Click here to read the full report >
Supplements have a trust problem, and the data shows that it is clearly a massive issue on Amazon.com. SuppCo has now published 4 issues of our Tested series since June, testing 44 best-selling supplements purchased on Amazon.com to determine if they meet their main active ingredient label claims.
The collective results from our reports on Creatine, NAD+, Urolithin A and Berberine have been troubling to say the least.
In just four months, our active ingredient testing revealed 22 failures and a 23rd “caution”, where supplements did not meet their label claims. Twenty out of the 22 failures had 0-3% of the main ingredient amount claimed.
That’s a 50%+ failure rate for popular products from America’s leading supplement marketplace, Amazon.com, which sold an estimated $15+ billion in supplements in 2024.
The data was so troubling that we decided to dedicate a full issue to understanding what may be driving the failures, searching for patterns that can help educate and protect users. In this special edition of SuppCo Tested, we’ll review the data and product origins to expose the e-commerce trends that may be driving such a high rate of failing supplements:
Click here to read the full report >
What's next?
We’ll show you where in the world these products come from based on publicly available e-commerce data (some of the answers will shock you).
We’ll reveal the correlation between prices, dosages and failed tests.
We’ll show you a rating system that foreshadowed many of the results.
And we’ll share how you can reduce your risk of buying a failing product, by looking for a clear combination of “tells” that a supplement may not contain what it says it does.
What follows are key insights from 4 Tested reports, 44 products evaluated, 70 tests runs, and over a thousand hours of work from our team. We hope it makes you safer and helps you get better results.
Nick Michlewicz (Co-Founder & COO)
& Jordan Glenn, PhD (Head of Science)