can u inject vitamin b12 How to self-inject intramuscular - Overview Safe B12 Injection Guide at

PLoS ONE 9(8): e103490

Maintaining adequate levels can help reduce the mortality risk associated with these conditions

Atherosclerosis (1992) 92(2-3):1419

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A 2021 systematic review of 16 randomized controlled trials and 6,276 participants (Markun and colleagues, Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue, Nutrients, 2021) found that B12 supplementation does not reliably reduce fatigue in people who are not deficient

While this effect appears to be related to the magnitude and rapidity of glucose lowering rather than a direct effect of the medication itself, patients with a history of diabetic retinopathy should undergo careful ophthalmologic evaluation before and during treatment, and the potential risks should be weighed against the expected benefits of improved glycemic control