Compounds & interventions

Peptides

Medicine & Biotech · covered by 23 outlets this week · tracked since 2026-10-27

Press: 19 mainstream 55 specialist 41 independent outlet-days

What it is

Evidence 2/10 · preclinical Uneven · 1–10 by use Signals · regulator warning

Peptides are short chains of amino acids; many hormones and drugs, including insulin and the GLP-1 drugs, are peptides. In health news the word increasingly means the grey market of injectable compounds (BPC-157, TB-500, growth-hormone secretagogues and others) sold online for recovery, muscle and anti-ageing, mostly without human trials or regulatory approval. Coverage here includes regulators' warnings about contaminated or mislabelled vials alongside the forum culture that drives demand.

The score describes the grey-market injectables (BPC-157, TB-500 and similar), which have animal data and almost no controlled human trials. Approved peptide drugs such as insulin and the GLP-1 drugs are rated on their own pages.

Evidence by use or claim · 1 preclinical to 10 thoroughly established

  1. Approved peptide medicines (insulin, GLP-1 drugs, oxytocin)10/10 · thoroughly established

    Decades of trials and use; rated on their own pages.

  2. Growth hormone-releasing peptides (tesamorelin, ipamorelin, CJC-1295)4/10 · early human evidence

    Tesamorelin is approved for HIV-related fat; the others raise growth hormone in short studies with no outcome trials.

  3. Thymosin beta-4 (TB-500)3/10 · early human evidence

    Phase 2 trials in wound healing and dry eye; nothing conclusive.

  4. GHK-Cu (copper peptide)3/10 · early human evidence

    Small studies of topical use on skin; injectable use untested.

  5. BPC-1572/10 · preclinical

    Animal data and a few small uncontrolled human studies.

  6. Epitalon, semax, selank and other grey-market peptides1/10 · preclinical

    Small, mostly older studies; little in the peer-reviewed English literature.

  • RegulatorHealth Canada warned in 2026 of bacterial contamination in unauthorised peptide products sold online.
  • MechanismBPC-157 promotes blood-vessel growth in animals, which raises the question of whether it could feed an undetected tumour; this has not been studied in people. source
  • TrialHuman data on BPC-157 amount to a few small uncontrolled studies and a phase 1 safety trial whose results were never published. source
  • MarketBanned in sport by WADA since 2022 and not approved by any drug regulator; in October 2026 US health officials said compounding pharmacies may supply BPC-157 and five other peptides under enforcement discretion, without FDA approval. source

This week · Health Canada warned of bacterial contamination in unauthorised peptide products sold online.

Written by the Alivewire editors from the coverage below, 3d ago; rated 2d ago. Not medical advice; how the ratings work.

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