BPC-157 vs GHK-Cu
Written by Aaron CuhaReviewed Sep 2026
The short answer
Two peptides sold for repair that act on completely different things. One is a 15 building block peptide from the gut, with animal studies on tendon and gut. The other is a three building block peptide that carries copper, with human data from use on the skin. The evidence does not swap, and neither does the way you take them.
- BPC-157 people
- 31
- BPC-157 nulls
- 1
- GHK-Cu people
- 99
- GHK-Cu nulls
- 2
Dose
No human dose established
No published study has given BPC-157 as a shot under the skin or as a pill, the ways most buyers take it. Amounts that circulate in forums are not a human dose. Amounts that were given in studies sit in Human evidence on this page.
Commonly reported amounts, in mcg. BPC-157 has no approved label and no completed human dosing trial.
Amounts commonly reported by people buying BPC-157, recorded for this archive's reconstitution calculator, are 250, 500 and 750 mcg. They are self-reports rather than trial doses, and this archive does not recommend any of them. No human dose has been established for BPC-157.
| Reported amount | Where the number comes from |
|---|---|
| 250 mcg | Self-reported in community sources; not a trial amount and not a label dose |
| 500 mcg | Self-reported in community sources; not a trial amount and not a label dose |
| 750 mcg | Self-reported in community sources; not a trial amount and not a label dose |
Dose
No injectable human dose established
Topical use is permitted as a cosmetic ingredient. No published trial has established an injectable human dose. Injected amounts that circulate are not a human dose.
Commonly reported injected amounts, in mg. GHK-Cu is approved only as a cosmetic ingredient, not as an injection.
Amounts commonly reported for injected GHK-Cu, recorded for this archive's reconstitution calculator, are 1, 2 and 3 mg. They are self-reports rather than trial doses, and this archive does not recommend any of them. No human dose has been established for injected GHK-Cu.
| Reported amount | Where the number comes from |
|---|---|
| 1 mg | Self-reported in community sources; not a trial amount and not a label dose |
| 2 mg | Self-reported in community sources; not a trial amount and not a label dose |
| 3 mg | Self-reported in community sources; not a trial amount and not a label dose |
First-hand reports are counted on each profile and never added together. This page sets two published records side by side. It does not pick a winner.
Column A
BPC-157Body Protection Compound 157
A lab-made piece of a stomach protein. It has lots of animal studies on tendon, muscle and gut healing. In people there is very little: two enema studies in Croatia, three small clinic reports with nobody to compare against, and one injury study with a dummy group that is still signing people up.
Column B
GHK-CuCopper Tripeptide-1 (GHK-Cu)
A tiny copper-carrying peptide your body makes. It is common in skin creams and has been studied for healing wounds and firming skin.
Side by side, on the facts we can check
| What we compare | BPC-157 | GHK-Cu |
|---|---|---|
| Category | Healing & Recovery | Healing & Recovery |
| FDA status | Not FDA-approved. In April 2026 the FDA took it off Category 2, its list of pharmacy ingredients with safety worries. In July 2026 the FDA's Pharmacy Compounding Advisory Committee voted 8 to 6, with one member abstaining, in favor of letting pharmacies make it. The FDA's own reviewers had advised against that. The FDA has not acted yet | Not an approved drug; allowed as a cosmetic ingredient |
| Half-life | Under 30 minutes in plasma in a two-person pilot; the animal literature describes effects lasting hours to days. | Short (topical use) |
| Molecular weight | 1,419.5 Da | 340.38 Da (free peptide); 402.92 Da (the copper complex, PubChem CID 71587328) |
| How it works | In animals, BPC-157 helps grow new blood vessels. It works with nitric oxide, a gas the body uses to widen blood vessels. In tendon cells from animals, it raises growth hormone receptors and growth signals. Nobody has found the exact switch it acts on. The FDA's 2026 review gave that as one reason it could not judge whether it should work. In people, very little is known. After an enema, it could not be found in the blood. A two-person test suggests it leaves the blood in under 30 minutes. Animal studies describe effects that last hours to days. | It carries copper into cells and turns on genes used in repair. That helps skin cells make collagen and the other building blocks that heal wounds. |
| Studies in people | 7 | 7 |
| Evidence | Limited: 3 completed trials, 31 people given it | Limited: 2 completed trials, 99 people given it |
| Legal status, US | Not approved; research use only | Allowed in cosmetics; not an approved drug |
Frequently asked questions
What is the difference between BPC-157 and GHK-Cu?
BPC-157: A lab-made piece of a stomach protein. It has lots of animal studies on tendon, muscle and gut healing. In people there is very little: two enema studies in Croatia, three small clinic reports with nobody to compare against, and one injury study with a dummy group that is still signing people up. GHK-Cu: A tiny copper-carrying peptide your body makes. It is common in skin creams and has been studied for healing wounds and firming skin.
Which has stronger research evidence, BPC-157 or GHK-Cu?
Each compound gets a band worked out from facts we counted, with the math shown. BPC-157 is Limited (3 completed trials, 31 people given it). GHK-Cu is Limited (2 completed trials, 99 people given it). That counts how much has been done in people. It does not rate whether either one works, and neither one is called the winner.
Are BPC-157 and GHK-Cu FDA-approved?
BPC-157: Not FDA-approved. In April 2026 the FDA took it off Category 2, its list of pharmacy ingredients with safety worries. In July 2026 the FDA's Pharmacy Compounding Advisory Committee voted 8 to 6, with one member abstaining, in favor of letting pharmacies make it. The FDA's own reviewers had advised against that. The FDA has not acted yet. GHK-Cu: Not an approved drug; allowed as a cosmetic ingredient.
Related posts
Blog articles that cover BPC-157 or GHK-Cu, newest first.
- Regulation / Nov 9, 2026 / 12 minCompounded Peptides: The 10 Conditions in HHS's New 503A Policy, and What Evidence Sits Behind Them
- Longevity / Sep 27, 2026 / 18 minPeptides for Longevity: What the Evidence Actually Shows in 2026
- Healing & Recovery / Sep 27, 2026 / 17 minPeptides for Joint Pain: BPC-157, TB-500, Lorecivivint, Pentosan and Collagen Peptides, Evidence Tiered
- Healing & Recovery / Sep 27, 2026 / 14 minPeptides for Gut Health: BPC-157, KPV and Larazotide Ranked by Human Evidence
Reviewed Sep 2026. This page puts two published records side by side. It is for learning, and it is not medical advice. When this site shows a dose, it is the dose a trial or a clinic actually used, or what people say they did, with the source attached. None of it tells you what to take.