What Science Currently Says So lets address the main question directly
10.1089/dna.2019.4922 208 ZhouS.DongJ.DengL.WangG.YangM.WangY.et al (2022)
Clinical-grade BPC-157 is manufactured by a licensed compounding pharmacy under pharmaceutical standards, with a Certificate of Analysis (COA) confirming purity, accurate dosing, and the absence of contaminants
Co-treatment with mercury and NAC significantly reduced the expression of MPO (2.49-fold, Table 2), HIF1 (2.12-fold, Table 3), MMP2 (1.94-fold, Table 4), TIMP1 (1.92-fold, Table 5), TIMP2 (1.92-fold, Table 6), NOS (2.00-fold, Table 7), and FN1 genes (1.85-fold, Table 8), while increasing SOD expression (0.76-fold, Table 9) compared to rats treated with a continuous mercury exposure alone
doi: 10.1038/s41467-017-00302-3 76 PrinzWAHurleyJH
Acta Physiol (Oxf)