NAC has a characteristic sulfurous smell (normal for sulfur-containing amino acid derivatives) If you take activated charcoal: charcoal can bind NAC in the gut and reduce absorption
Through biochemical and structural analysis, here we show that anthocyanin-related glutathione transferases, currently implicated only in anthocyanin transport, catalyse an essential dehydration of the leucoanthocyanidin dioxygenase product, flavan-3,3,4-triol, to generate cyanidin
Fuhrman BJ, Feigelson HS, Flores R, et al
For skin health, it inhibits the key enzyme in melanin production, leading to more even skin tone
However, the Medicines and Healthcare products Regulatory Agency (MHRA) has outlawed the sale of BPC-157 for human consumption in the UK