BPC-157 vs Thymosin Alpha-1

A synthetic 15-amino-acid pentadecapeptide derived from a protein in human gastric juice, widely researched for its effects on soft tissue healing, tendon repair, and gut integrity.

A 28-amino-acid peptide originally isolated from the thymus gland. Approved in 30+ countries for hepatitis B/C and sepsis. Used off-label as a comprehensive immune modulator.

BPC-157 appears to upregulate growth hormone receptor expression, promote angiogenesis through VEGF pathways, and accelerate collagen reorganisation in damaged tissue. Animal models show effects on ligament, tendon, muscle, bone, and gastric mucosa repair.

TA1 trains and optimises T-cell function, enhances NK cell activity, and modulates dendritic cell maturation. Sits at the junction of innate and adaptive immunity.

250–500 mcg per day (research protocols)

1.6 mg subcutaneous 2x per week

~4 hours (parenteral)

~2 hours

Subcutaneous, Intramuscular, Oral (stable form)

Subcutaneous

research-only

investigational

£16 · £3.2/mg via Peptides UK

£30 · £6.0/mg via Peptides UK