A sensible precaution is to patch test a small area first and to stop and seek advice if the skin becomes sore or inflamed
Kraus D, Yang Q, Kong D, Banks AS, Zhang L, Rodgers JT, Pirinen E, Pulinilkunnil TC, Gong F, Wang YC, Cen Y, Sauve AA, Asara JM, Peroni OD, Monia BP, Bhanot S, Alhonen L, Puigserver P, Kahn BB. Nicotinamide N-methyltransferase knockdown protects against diet-induced obesity. Nature. 2014 Apr 10;508(7495):258-62. doi: 10.1038/nature13198. PMID: 24717514; PMCID: PMC4107212
Griseti, E., Merbahi, N
Its definitely something to factor into your price comparison
It also helps protect our mitochondria, is a cofactor for many enzymes in the body, and is vital to energy production
What BPC-157 Research Establishes and Where It Ends BPC-157 occupies an unusual position in the research peptide space: the animal evidence is more substantial than for most compounds in its category, the proposed mechanisms are pharmacologically coherent, and the gastric stability profile creates a legitimate oral administration hypothesis