glutathione synthetase Inborn errors in the metabolism of | Orphanet Journal of Rare Diseases Glutathione Synthetase (GSS) Rabbit mAb

It is not a scheduled controlled substance, so possession for personal research use is not criminalized the way a scheduled drug would be, but it also cannot be legally sold as a dietary supplement or marketed with a therapeutic claim

Self-prescribing B12 injections for weight loss purposes is not supported by clinical evidence and may delay diagnosis of underlying conditions contributing to weight concerns or low energy levels

Allergies Some collagen products may contain eggs and shellfish

I've also read about once the process is overridden by saturation of B12 there's no going back to the natural process that was failing anyway

This isn't a maybe