for what glutathione is used Benefits, Uses and Best Practices Glutathione - Wikipedia
Description
GHK-Cu reduces oxidative stress by modulating antioxidant enzyme systems, regulating metal-ion balance, and influencing mitochondrial signaling pathways

Are B12 and B Complex Injections Safe in Pregnancy and Breastfeeding

doi: 10.1126/science.1166859

Luft jedes Mal gleich gut

L.UdovicicM.SimonjiK.HanzevackiJ

This is from the same study you put up Our meta-analysis still has several limitations
