can glutathione lower blood sugar Injection: Benefits, Safety, & What To Expect Glutathione Tablets For Skin Whitening:

It is emphatically not a finding of efficacy and not drug approval

Always consult your veterinarian before starting any new supplement, especially if your pet is under medical care

10.1177/1352458517711568 [DOI] [PMC free article] [PubMed] [Google Scholar] Cobley J

Because your body does not readily store excess amounts, toxicity from B12 is very unlikely, even at the higher doses used in injections

Your risk is elevated if you're over 50 (stomach acid production and intrinsic factor decline with age), eating a plant-based or low-meat diet, taking metformin or proton pump inhibitors long-term, managing a GI condition that affects absorption, or on a GLP-1 protocol where significantly reduced food intake has persisted for months