Your supplement claims a lot.
Can it back it up?
We're here to check
ClaimCheck
We're here to check
Our Rating System
We have built a database that summarizes every health claim we have evaluated, so you can look up any supplement and see exactly what the science says. Every claim in our database gets one of three ratings based on what the peer-reviewed evidence actually supports. Here is what each one means for your shopping decision.
The evidence is solid.
Multiple high-quality, independent studies consistently support this claim at the ingredient, dose, and mechanism stated on the label. This is what good looks like.
What it means for you
The health claim is supported by independent science. You can buy with confidence that the label reflects what the research says.
The evidence is mixed or limited.
Some research supports the claim, but not enough to be definitive. Studies may be small, preliminary, or inconsistent. The science is promising but not settled.
What it means for you
The claim is plausible but not proven. You are not being misled, but the scientific case is not as strong as the label might suggest. Proceed with that in mind.
The evidence does not support the claim.
The peer-reviewed literature does not back up what the label says. The ingredient may not work, the dose may be ineffective, or the claimed mechanism has no credible scientific basis.
What it means for you
The claim is not scientifically supported. That does not mean the product is harmful, but the health claim on the label is not backed by the evidence.
Using ClaimCheck
Our database is free, public, and designed to be simple to use. You do not need a science degree to understand what you find.
Enter the supplement name, the specific ingredient, or the health claim from the label. You can search by brand, by claim, or by ingredient.
Each result shows the GREEN / ORANGE / RED rating, a plain-language summary of the evidence, and the key studies behind our conclusion. You can read the full evaluation report for every claim in the database.
Armed with what the science actually says, you can decide whether a supplement’s claim is worth paying for, or whether the label makes promises the evidence cannot keep.
Recent Searches
Vitamin C — Immune health
Evaluated March 2025
Ashwagandha — Stress relief
Evaluated Jan 2025
Calcium — Bowel regularity
Evaluated Nov 2024
Omega-3 — Cardiovascular health
Evaluated Oct 2024
The problem
A 1994 law called DSHEA allows supplement manufacturers to make health claims without FDA approval. They just notify the FDA after the fact and enforcement is extremely rare. Manufacturers can essentially say whatever they want, as long as the wording follows the right format.
You've seen it on every package: "This statement has not been evaluated by the Food and Drug Administration." It's an admission that nobody has verified the claim is true. It's required by law because the claim has never been checked.
The FDA reviews whether a claim is formatted correctly, not whether it is true. A supplement can legally claim to "support bowel regularity" with no science behind it whatsoever, as long as the wording is right. That is the gap ClaimCheck exists to fill.
Americans spend over $50 billion a year on supplements, making decisions based on what the label says. Until now, no independent body existed to check whether those claims were actually true. That is what ClaimCheck is built to be.
Free & Public
The ClaimCheck database is free to use. Search any ingredient, brand, or health claim and see what the evidence actually says.
No account required. No email needed.
