is glutamate the same as glutathione Frontiers Is Glutathione the Master Antioxidant?
Description
It augments the other B vitamins functions while also exhibiting its own metabolic enhancing properties such as proper red blood cell formation, neurological function, and DNA synthesis

NakaiKYonedaKMaedaRMunehiroAFujitaNYokoiIet alUrinary biomarker of oxidative stress in patients with psoriasis vulgaris and atopic dermatitis

Metformin also reduces B12 absorption in the intestine
PMID 13654346

The best way to treat this type of shoulder pain depends on the root cause
