It is naturally produced in the body and present in every cell
Sources WebMD: Glutathione Uses, Side Effects, and More Healthline: Glutathione Benefits

BPC-157/TB-500/KPV/GHK-Cu 10+10+10+50mg (KLOW blend 80mg) $225.00 Volume discounts Auto-applied at checkout Free shipping on orders of $200+ Compound Identity COMPOUND NAME BPC+TB500+GHK-Cu+KPV SYNONYMS KLOW blend CAS NUMBER 137525-51-0 (BPC-157), 77591-33-4 (TB500), 300801-03-0 (GHK-Cu), 2828433-34-5 (KPV) MOLECULAR FORMULA C 62 H 98 N 16 O 22 (BPC-157), C 212 H 350 N 56 O 78 S (TB500), C 28 H 46 CuN 12 O 8 (GHK-Cu), C 18 H 34 N 4 O 6 (KPV) MOLECULAR WEIGHT ~7189 g/mol STRUCTURE Multi-peptide blend PEPTIDE SEQUENCE Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val (BPC-157), Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (TB500), Gly-His-Lys (GHK-Cu), Lys-Pro-Val (KPV) CHEMICAL STRUCTURE Molecular Formula : C 62 H 98 N 16 O 22 (BPC-157), C 212 H 350 N 56 O 78 S (TB500), C 28 H 46 CuN 12 O 8 (GHK-Cu), C 18 H 34 N 4 O 6 (KPV) Source: PubChem Mechanism of Action The KLOW blend acts on multiple cellular pathways that regulate inflammation, tissue repair, angiogenesis, and oxidative balance

Acetyl Glutathione adding an acetyl function group makes the GSH molecule more stable and is thought to enhance delivery through the circulation and to the brain