Supplements, shown as solid as their science.

Every capsule here is drawn from its studies. Decades of strong trials render solid. Hype renders as a ghost. You can tell before you read a word.

See the tested pairs Browse all supplements

82 supplements · 1,574 pairs · every picture is built from studies

What people buy mostDrawn from studies

What do the states mean?+

Solid: well studied, and it works.
Half-there: the science is still forming.
A ghost: almost no real studies.
Hollow: well studied, and it does not work.
A cord: the pair itself has been tested together.
Air: nobody has ever tested this pair.

The full scoring method: How we score

You can tell before you read a word.

Same rules for every capsule, best sellers included. Solidity is earned in trials, not in marketing budgets.

Creatine monohydrate · solid2 scored studies on its main claim.

Vitamin B12 · half-there1 scored study on its main claim.

Deer antler velvet · a ghost1 scored study on its main claim.

Sold together isn’t tested together.

When two supplements have actually been studied as a pair, a cord ties them. When they haven’t, we leave air. The air is the review.

Vitamin D + vitamin K2 · cordedThree trials of the actual pair. See the review

Magnesium + L-theanine · airNever tested together (screened Aug 2026). See the page

Draw your whole routine.

List what you take and when. You get one picture of the full stack: what stands solid, what is half-there, and which of your pairs have actually been tested together.

What you take

Vitamin D Vitamin K2 Ashwagandha Add another…

When you take it

See the tested pairs

Your stack becomes one picture · air stays air

Where solidity comes from.

We read every published study. All of them, nulls included.

Every strong result hardens the capsule a little more.

No studies? It stays a ghost, whatever the label promises.

Nothing hardens from a press release.