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2017;94:312321.e3
It has a shelf life of 24 months under these conditions
Maintaining optimal glutathione levels helps your body effectively defend against illness
Competing interests The authors declare that they have no competing interests
Sensitivity or Allergies to B12 or Its Components: Some individuals may have an allergic reaction to the preservatives or additives in B12 injections, especially those with known sensitivities to certain medications or substances
One of these is N-acetylcysteine (NAC) , a form of cysteine that replenishes the most limited ingredient in glutathione synthesis
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