Compare Peptides

Select any two compounds for a side-by-side comparison of mechanism, uses, risks, and FDA regulatory status.

Popular comparisons

BPC-157

Body Protection Compound-157, Bepecin

Pending PCAC
Healing & Recovery

Thymosin Alpha-1

Tα1, Zadaxin

Category 1
Immune Support
Overview

A synthetic 15-amino acid peptide derived from a protective protein found in human gastric juice. One of the most widely researched peptides for tissue repair and recovery.

A thymic peptide that plays a central role in immune system regulation. Approved as a drug in over 35 countries (though not in the US) for hepatitis B and C treatment and as an immune booster.

Mechanism of Action

BPC-157 promotes angiogenesis (new blood vessel formation), upregulates growth factor expression, and modulates nitric oxide synthesis. It appears to accelerate healing of tendons, ligaments, muscles, and the GI tract through multiple pathways including the FAK-paxillin pathway.

Enhances T-cell function, promotes dendritic cell maturation, and modulates cytokine production. Acts as an immune system regulator rather than a simple stimulant, helping to balance immune responses.

Common Uses
  • Tendon and ligament repair
  • Gut healing and GI protection
  • Muscle injury recovery
  • Joint health
  • Post-surgical recovery
  • Immune system support
  • Chronic infection management
  • Cancer adjunct therapy (in some countries)
  • Post-illness recovery
  • Autoimmune condition management
Known Risks
  • Limited human clinical trial data
  • Most research is animal-based
  • Potential interactions with blood pressure medications
  • Injection site reactions
  • Long-term safety profile unknown
  • Generally well-tolerated in clinical use
  • Injection site reactions
  • Rare allergic reactions
  • May interact with immunosuppressive drugs
Regulatory Status
Pending PCAC

On April 15, 2026, the FDA announced BPC-157 will be removed from the Category 2 'significant safety risks' list effective April 22, 2026. It is now scheduled for formal PCAC (Pharmacy Compounding Advisory Committee) review on July 23, 2026, to determine whether it should be added to the 503A bulk drug substances list. Removal from Category 2 does not authorize compounding — pharmacies should exercise caution until PCAC issues its recommendation. Previously reclassified to Category 1 in February 2026, a step that is now superseded by this more formal process.

PCAC: July 23, 2026

Category 1

Reclassified to Category 1 in February 2026 as part of the HHS announcement restoring compounding access. Not affected by the April 15, 2026 Category 2 removal action. Approved as Zadaxin in 35+ countries but not FDA-approved in the US. Available through licensed 503A compounding pharmacies with a physician prescription.

This comparison is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any peptide therapy.