Most peptides don't require this
titled Glutathione Stimulates Vitamin D Regulatory and Glucose-Metabolism Genes, Lowers Oxidative Stress and Inflammation, and Increases 25 OHD Levels in Blood: A Novel Approach to Treat 25-Hydroxyvitamin D Deficiency clearly outlines this relationship and describes how increasing GSH has been shown to increase the bioavailability of 25(OH)D
Sterile water contains no bacteriostat, no antimicrobial agent, and no added preservative
Typical storage: Room temperature (15-25C / 59-77F) is usually fine Away from direct sunlight Away from heat sources (windowsills, radiators) Bathroom is often too humid and warm Refrigeration for unopened serums: Not required for most products Can extend shelf life by 3-6 months Beneficial for products without strong preservatives Good practice if you stock up Shelf life unopened: Room temperature: 12-24 months (check label) Refrigerated: 18-30 months Opened topical copper peptide serums Once opened, exposure to air and potential contamination change storage needs
Adult mice may have serum antibodies but no clinical signs and few, if any, histopathologic lesions
It is the same logic as a loading phase followed by a maintenance phase in many research protocols: front-load to establish, then hold with less