If vitamin deficiencies are suspected (particularly B12, zinc, or iron), discuss appropriate testing with your healthcare provider before considering supplements
Injectable human use: no peer-reviewed Phase II or III trials exist
Pathophysiol, Clin Present, Diagnosis P T
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Malabsorption, increased metabolic demands during inflammation, and dietary restrictions can lead to deficiencies in vitamins (particularly B12, folate, and fat-soluble vitamins), minerals (iron, calcium, magnesium), and protein
There was no significant difference between the glutathione supplement and placebo groups in terms of subjective efficacy