We compare, we don't sell.Some links pay us. How we make money
Peptide Chooser
Compare by goal

Injectable peptides for hair growth: legal status and evidence.

Peptide Chooser editorial team. Checked 2 Nov 2026.

Short answer

Research-use shops sell BPC-157, GHK-Cu and TB-500 in vials for hair. None is FDA approved for any use, and we found no trial in people that shows any of them grows hair.1 The approved option finasteride starts at $25 a month at the online clinics we track (Strut Health).2

Which injectable peptides are sold for hair?

The hair vials we see at research-use shops are BPC-157, GHK-Cu and TB-500. They come as a powder in a vial, meant to be mixed with water and injected. The label says they are for research, not for people.

They are not approved medicines. A medicine needs FDA approval first: its maker sends trial data, and the FDA checks that the benefits outweigh the risks.12 Nobody has done that for these peptides.

What is their FDA status?

From our database, with the FDA page behind each one:

  • BPC-157: Not approved: its nomination for pharmacy compounding was withdrawn.3 78 shops we track list BPC-157; the middle price across their listings is $5.95 per mg.4
  • GHK-Cu: Not approved: its nomination for pharmacy compounding was withdrawn.3 76 shops we track list GHK-Cu; the middle price across their listings is $0.65 per mg.4
  • TB-500: Not approved: its nomination for pharmacy compounding was withdrawn.3 75 shops we track list TB-500; the middle price across their listings is $6.65 per mg.4

The FDA lists BPC-157 among the substances that may be risky in pharmacy-made medicines: it may set off an immune reaction when given some ways, and there is little or no safety information on it in people.3

In July 2026 the FDA's advisory committee on pharmacy compounding reviewed BPC-157 and TB-500: FDA advisory committee reviewed it for compounding on 23 Jul 2026; FDA proposed not to allow it.11 Our guide Is BPC-157 legal? explains what that review means.

Is there any evidence they grow hair?

Not in people, as far as we could find. The hair study quoted for copper peptides was done on follicles in a dish, with AHK-Cu, a close relative of GHK-Cu.13 The studies on BPC-157 are in animals and cells.3

A study in a dish or in mice tells you what a substance does to cells. It does not tell you what an injection does to your hair, or what it does to the rest of you.

A price per mg does not tell you either. It says nothing about what is in the vial: a lab report covers one batch, tested once, and only if a lab outside the shop did the test. Our guide on how to read a COA shows what to look for. Our best peptides for hair growth guide puts these vials next to serums, biotin and the approved options.

What has the FDA said to the shops?

Of the 172 FDA warning letters on our letters page, 20 went to research-use peptide shops.5 Each letter names the products and the claims the FDA objects to; you can read it in full on fda.gov.

A warning letter is the FDA's formal notice, not a court ruling.14 Our guide on what an FDA warning letter means explains what follows one.

What do the approved options cost at online clinics?

Finasteride 1 mg is FDA approved for hair loss in men.15 Minoxidil on the scalp is approved too, and sold without a prescription.16 Minoxidil tablets are a blood pressure medicine; for hair, a prescriber decides whether they fit you.17

ClinicPlanWhat it isPer monthFDA letterChecked
Strut HealthOral FinasterideFinasteride, FDA approved for hair loss$252FDA letter 20 Feb 202631 Oct 2026
KeepsOral MinoxidilMinoxidil tablet, a blood pressure medicine$306none31 Oct 2026
KeepsMinoxidil+ SprayPharmacy-made mix, not FDA approved$457none31 Oct 2026
Happy HeadSuperCapsule Finasteride + Minoxidil + Vitamin D3Pharmacy-made mix, not FDA approved$63.208none31 Oct 2026
Happy HeadSuperSolution Finasteride + MinoxidilPharmacy-made mix, not FDA approved$79.209none31 Oct 2026
Happy HeadTopical Solution + SuperCapsule Finasteride + MinoxidilPharmacy-made mix, not FDA approved$126.4010none31 Oct 2026

Pharmacy-made mixes, such as finasteride and minoxidil in one capsule, are not themselves FDA-approved products.18 A clinic with an FDA letter is still listed: the letter is public record.

None of this is medical advice. A doctor or dermatologist can tell you which option fits your hair loss.

What to do next

Compare hair optionsIs BPC-157 legal? guide

Sources

  1. Drugs@FDA, searched through openFDA for BPC-157, GHK-Cu (also as copper tripeptide and prezatide) and TB-500 (also as thymosin beta-4): no approved product, 2 Nov 2026: https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm
  2. Strut Health, Oral Finasteride, 31 Oct 2026: https://www.struthealth.com/hair-loss
  3. FDA, Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks, current as of 22 Apr 2026: https://www.fda.gov/drugs/human-drug-compounding/certain-bulk-drug-substances-use-compounding-may-present-significant-safety-risks
  4. Peptide Chooser database: the research-use and cosmetic peptide shops we check, 2 Nov 2026. Their prices and checks are in the seller windows on our goal pages
  5. Peptide Chooser, FDA warning letters to peptide sellers, compounders and online clinics, checked 2 Nov 2026
  6. Keeps, Oral Minoxidil, 31 Oct 2026: https://buy.keeps.com/low-dose-oral-minoxidil
  7. Keeps, Minoxidil+ Spray, 31 Oct 2026: https://www.keeps.com/our-products/minoxidil-spray
  8. Happy Head, SuperCapsule Finasteride + Minoxidil + Vitamin D3, 31 Oct 2026: https://www.happyhead.com/products/supercapsule-finasteride-minoxidil-vitamin-d3
  9. Happy Head, SuperSolution Finasteride + Minoxidil, 31 Oct 2026: https://www.happyhead.com/products/topical-supersolution-finasteride-minoxidil-and-liposomal
  10. Happy Head, Topical Solution + SuperCapsule Finasteride + Minoxidil, 31 Oct 2026: https://www.happyhead.com/products/topical-solution-supercapsule-finasteride-minoxidil
  11. FDA Briefing Document, Pharmacy Compounding Advisory Committee meeting, 23 and 24 Jul 2026 (BPC-157, TB-500, MOTS-c, epitalon): https://www.fda.gov/media/193342/download
  12. FDA, Development and Approval Process: Drugs: https://www.fda.gov/drugs/development-approval-process-drugs
  13. Pyo HK et al., The effect of tripeptide-copper complex on human hair growth in vitro, Arch Pharm Res 30(7), 2007, PubMed 17703734: https://pubmed.ncbi.nlm.nih.gov/17703734/
  14. FDA, About Warning and Close-Out Letters, current as of 20 Mar 2024: https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/about-warning-and-close-out-letters
  15. MedlinePlus, Finasteride, revised 15 Jun 2026: https://medlineplus.gov/druginfo/meds/a698016.html
  16. MedlinePlus, Minoxidil Topical: https://medlineplus.gov/druginfo/meds/a689003.html
  17. MedlinePlus, Minoxidil (tablets): https://medlineplus.gov/druginfo/meds/a682608.html
  18. FDA, Compounding and the FDA: Questions and Answers: https://www.fda.gov/drugs/human-drug-compounding/compounding-and-fda-questions-and-answers