after glutathione injection A Beginner's Guide to Injections: What to Expect How Often Can You Get

10.1074/jbc.m807061200 19 FuL.-H.WanY.QiC.HeJ.LiC.YangC.et al (2021)

Gut microbiota reinforce host antioxidant capacity via the generation of reactive sulfur species

they serve different purposes

Though it differs a bit from one person to another, the effects of B12 vitamins usually last around 48 hours to 72 hours after the initial injection

Common Uses and Benefits of Glutathione Injections Apart from just helping to eliminate blemishes of the skin, glutathione also has many other benefits, including: Detoxification and Immune Support: Glutathione is a potent antioxidant that helps the liver eliminate toxins and heavy metals, leaving your body detoxified and with a healthier immune system

They are not for human consumption or use by athletes