expanded structure of glutathione Condensed structural chemical formula (IUPAC name: Glutathione and its structural conformations.
Description
Lee, K.J

It contains all the nutrients and biologically active components that newborns require to meet their developmental demands and boost their immunity

Marrocco I, Altieri F, Peluso I (2017) Measurement and clinical significance of biomarkers of oxidative stress in humans
If you've had a BAD experience with B12 shots, it's most likely that you do not tolerate or convert cyanocobalamin well (see if you can verify what form of B12 was in the shot that made you react poorly, and then stay away from that specific form if you can)
