PeptideTDB

Peptide safety & regulation

Peptides range from approved prescription drugs to unapproved compounds sold with little oversight. Safety evidence follows the same split.

What the evidence shows

BPC-157 (unapproved)

Limited human evidence

Human safety data amount to a two-person intravenous pilot and small case series. Reviews call it investigational and warn of risks from unregulated manufacturing and contamination.

Other unapproved research peptides (CJC-1295, ipamorelin, MK-677, TB-500 and others)

Limited human evidence

Two recent reviews say rigorous human safety data are scarce. One documents cardiovascular and metabolic risks, naming MK-677 and congestive heart failure.

Verdicts reflect only the studies summarised on this site, last reviewed November 9, 2026. See how verdicts are set.

Studies (5)

StudyDesignPeptide
Tewari et al., 2026ReviewBPC-157, TB-500 / thymosin beta-4, CJC-1295, Ipamorelin, MK-677 (ibutamoren), GHK-Cu (copper peptide)
Mendias et al., 2026ReviewBPC-157, TB-500 / thymosin beta-4, CJC-1295, Ipamorelin, GHK-Cu (copper peptide), Sermorelin, Tesamorelin, MOTS-c
Vasireddi et al., 2025Systematic reviewBPC-157
McGuire et al., 2025ReviewBPC-157
Lee et al., 2025Human study (no control group)BPC-157
ReviewJoints & tendonsMuscle & strengthSafety & regulationBPC-157TB-500 / thymosin beta-4CJC-1295IpamorelinMK-677 (ibutamoren)GHK-Cu (copper peptide)

Peptide Supplements and Their Therapeutic Applications in Sports Medicine

Tewari et al., 2026 · Am J Sports Med · Published animal and human studies of six peptides for musculoskeletal recovery

Of the publications found, 67% used animal models. Human studies were a handful, mostly without robust controls, and showed modest improvements at best for metabolic bone health and degenerative knee pain. The authors conclude that the claimed benefits for…

What it found and what it doesn't show

ReviewSafety & regulationJoints & tendonsMuscle & strengthBPC-157TB-500 / thymosin beta-4CJC-1295IpamorelinGHK-Cu (copper peptide)SermorelinTesamorelinMOTS-c

Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance

Mendias et al., 2026 · Sports Med · Narrative review of approved and unapproved peptides marketed directly to patients

Reviews the mechanisms, safety and regulatory status of peptides sold for injury recovery and performance, including BPC-157, CJC-1295, GHK-Cu, ipamorelin, MOTS-c, sermorelin, tesamorelin and TB-500. Many unapproved peptides show favourable tissue-repair or…

What it found and what it doesn't show

Systematic reviewJoints & tendonsSafety & regulationBPC-157

Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review

Vasireddi et al., 2025 · HSS J · 36 studies: 35 preclinical (animal) and 1 clinical, from 1993 to June 2024

Nearly all the evidence on BPC-157 is from animals. Those studies suggest faster healing of muscle, tendon, ligament and bone injuries. The one clinical report was a retrospective study of knee injections in which 7 of 12 patients reported relief lasting…

What it found and what it doesn't show

ReviewJoints & tendonsSafety & regulationBPC-157

Regeneration or Risk? A Narrative Review of BPC-157 for Musculoskeletal Healing

McGuire et al., 2025 · Curr Rev Musculoskelet Med · Preclinical and clinical literature on BPC-157 in musculoskeletal healing

BPC-157 shows broad regenerative effects in animal models, acting on blood-vessel growth, fibroblast activity and inflammation signalling. Only three small human pilot studies exist (knee pain, interstitial cystitis, and intravenous safety), with no adverse…

What it found and what it doesn't show

Human study (no control group)Safety & regulationBPC-157Injectable

Safety of Intravenous Infusion of BPC157 in Humans: A Pilot Study

Lee et al., 2025 · Altern Ther Health Med · 2 adults (a 58-year-old man and a 68-year-old woman) at a private clinic in Florida, both of whom had received intravenous BPC-157 before

Blood tests of heart, liver, kidney, thyroid and blood-glucose markers showed no measurable change after the infusions, and no side effects were reported.

What it found and what it doesn't show

Not covered yet

  • Legal and regulatory status is not part of these ratings; it has its own dated page (see Legal status).
  • Safety of oral collagen and marine peptide supplements is not summarised here yet.

See also: Are peptides legal in the US? (dated status page)

Educational information only. It is not medical or legal advice, and nothing here is a recommendation to use any peptide. Talk to a clinician before starting a supplement or treatment.