anemia and glutathione Nineteen-year follow-up of a patient with severe synthetase deficiency Glutathione deficiency and heart failure:

Stage 2: Low B12 Levels Some fatigue or weakness is often missed

Its been clinically studied since 1973 (and there are tons of medical journals you can read on it) but everything I am saying is considered alleged and supposed because there isnt FDA-approved evidence for these claims

Not sure what scientific backing they have for most of the claims made on their 'learn more' page - most of which looks biased at best - and really not sure where the claim that you will lose the effect of the shot more quickly if you drink more water comes from - never come across any studies that would imply that was true - it also claims that B12 isn't stored in the body and because it is water soluble which is definitely a load of twaddle

Glutathione is also naturally occurring and well-tolerated by the body