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Why these two get studied together The short answer is that the preclinical literature on each peptide individually points at overlapping but distinct elements of the wound-repair toolkit: BPC-157 has been associated with angiogenesis and growth-factor signaling, while thymosin beta-4 fragments have been associated with cell migration

Demonstrates antioxidant and anti-inflammatory signaling effects in preclinical research

That stinging doesn't mean something's wrong it's just your body reacting to the acidic pH

A 2025 safety study confirmed that IV BPC-157 was well tolerated in healthy adults with no adverse events

They live inside regular mesenchymal stem cells (MSCs) but behave very differently