glutathione and cancer Human cancer-associated fibroblasts enhance levels antagonize drug-induced prostate cell death Glutathione-Dependent Pathways in Cancer Cells

It was first synthesized in the 1990s, modeled on the amino acid composition of epithalamin, a peptide extract from the bovine pineal gland

Thus, I favor using the whole blend when its indicated for recovery

Sep 2016;44(6):592-600

separates pentadecapeptide from impurities, deletion sequences, and synthesis byproducts Mass Spectrometry: Exact molecular weight confirmation (1,419.53 g/mol) and Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val sequence verification Amino Acid Analysis: Composition quantification Structural Confirmation: Triple proline integrity verification Endotoxin Testing: LAL assay for cell culture applications Physical Characteristics: DEVELOPMENT STATUS Origin: Derived from naturally occurring gastric protective protein

Some users take the product ongoing for maintenance