glutathione and l-glutathione 250mg, LongLife Youtheory Liposomal Glutathione + Resveratrol

Glutathione (GSH) is synthesized in the cytoplasm in virtually all cells from its constituent amino acids by two sequential ATP-requiring enzyme-catalyzed reactions (see figure below) [1]

It's 1ml Yes , but 1.5mg( or 1500mcg as they express it ) 50% more B12 content than Rotexmedica It looks as though you chose the Pascoe ampoules 1.5 mg ampoules ( Nackapan pointed this out ) These are not so popular as Rotexmedica , so it might be that that pharmacies dont shift this brand as quickly as the Rotexmedica ., dont have such a fast turnover

One of the effects of vitamin B-12 deficiency is lethargy or the lack of energy

And may also ease allergy symptoms