im glutathione injection – IVme Wellness Glutathione Injections: Side Effects &
Description
Refrigeration is recommended following reconstitution to maintain compound stability

doi:10.1016/j.ghir.2009.04.009

Supplementation with N-acetylcysteine and taurine failed to restore glutathione content in liver of streptozotocin-induced diabetics rats but protected from oxidative stress

For peptides you plan to use within weeks, refrigeration is adequate
