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Supplements with nothing hidden

Know exactly what you’re taking.

The whole label, shown in full. What each lab report covers, and what it leaves out. And the evidence for each product graded plainly, so you can decide for yourself.

What you can check

Shop by category

Six shelves. Every product graded.

See all 22 products

Start here

Four good places to start.

The evidence

We tell you how good the research is. Even when it is thin.

Some supplements are backed by hundreds of trials. Others are popular but barely studied. Every benefit on this site carries one of three grades and a link to the studies behind it.

See the whole line, graded
  • Strong evidence

    Many human trials agree, at the amount in this product.

  • Moderate evidence

    Human trials mostly agree, but they are small, short or mixed.

  • Early evidence

    A few small human studies or lab work. Promising, not proven.

Lab reports

We read the lab reports so you do not have to.

A lab report can cover a lot or very little. For each product we show what was measured, what was only checked against a limit, and what was not tested at all.

See what was tested
  1. STEP 1CollectedWe get the manufacturer’s lab report for each product.
  2. STEP 2CheckedWe read it line by line against the label on the container.
  3. STEP 3ShownYou see what it covers and what it leaves out, on every product page.

Five questions

Not sure where to start?

Tell us your goal and how you train, eat and sleep. We suggest a short routine, check it for overlapping ingredients, and show the evidence for each pick.