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Those claims need extra caution

It was observed that carnitine retention improved (less carnitine excretion in urine), which suggests increased muscle carnitine

FGF21, by binding to its receptor FGFR1, activates the downstream PI3K/AKT signaling pathway, inhibits the activation of the inositol-requiring enzyme 1 (IRE1)/JNK pathway, and reduces the expression of apoptosis-related proteins such as C/EBP-homologous protein (CHOP) and claved-caspase3, thereby suppressing oxidative stress and apoptosis

The prevailing evidence strongly suggests that BPC 157 primarily functions as a systemic agent

For a broader overview of peptide handling best practices, see our guides on How to Store Research Peptides and What Are Research Peptides