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PeptideCurator
Research, Reviewed
Review

How We Review

We score what a seller will say in public. We do not score how well anything works, because nobody honestly can.

Data sheet · Updated August 2026 · How we source this
A laboratory bench with printed results

The method, in four rules

  1. We never score how well something works.

    Most sites in this market give a mark out of ten. To do that you would need trials in people. Nobody selling these has run them. A score would be invented.

  2. We score what a seller will state in public.

    Whether it names a testing lab. Whether it prints a purity figure. Whether a returns policy exists. All of it checkable by anyone.

  3. "We could not confirm" gets its own column.

    It is not quietly dropped or rounded into a no. A gap in the record is a finding, and it is the finding readers most need.

  4. We date every check.

    A seller can change a page tomorrow. A check with no date on it is worthless.

What we will and will not put a mark against

We will score
  • Published purity figures
  • Whether a lab is named
  • Research-use labelling
  • Returns and shipping terms
  • Whether a certificate can be matched to a batch
We refuse to score
  • How well a compound works
  • Whether it is safe
  • Results anyone reports
  • Anything we would have to guess at
A directory that scores effectiveness in this market is inventing a number. We would rather publish a smaller claim that happens to be true.

Affiliate links

Some links here earn us a commission. No seller pays for a rating, and no row on a scorecard changes because of a commercial relationship. Full disclosure.

Nothing on this page says any compound does anything for anyone. None of them is approved for people to take. Talk to a doctor about your health.