← Research goals

Skin and collagen

What the published literature pairs among skin and collagen compounds, graded by evidence. GHK-Cu carries most of the human data here.

Graded pairings

Mentioned together

BPC-157 and GHK-Cu

Named together in the same review articles, but never tested together. We say that plainly here, and show why researchers list them side by side.

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Co-administered

GHK-Cu and TB-500

Two peptides discussed for wound healing. One early human pilot put both in the same multi-ingredient formula, which is not the same as testing the pair.

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Reading this goal in one minute

GHK-Cu carries most of the human data here. Its strongest result is an older randomized ulcer study. The rest:

  • BPC-157: small, uncontrolled human evidence.
  • TB-500: outcome data almost all animal or lab.
  • Glutathione: many small human trials, but no approved therapeutic use listed here.

Neither pairing here is a tested combination. BPC-157 and GHK-Cu are only mentioned together in reviews. GHK-Cu and TB-500 appeared in one early human pilot, inside a multi-ingredient formula that can't separate what either peptide did.

Our grade definitions explain the difference.