vitamin b12 injection reddit ACNE] Warning to all those who supplement with B vitamins--Be careful Compounded Hydroxocobalamin (Vitamin B12) Injection

B12 absorption declines significantly with age due to reduced stomach acid production

The absence of preservatives ensures purity, but it also limits reuse

The molecule has been studied in animal models of adipose-tissue metabolism, with published preclinical work examining its effects on NAD+ pool dynamics and on the methyl-donor balance NNMT regulates

Testing MTHFR and other relevant genetic markers can identify these individuals, though routine genetic testing for b12 supplementation decisions remains controversial

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Worse, degraded peptides can form aggregates or byproducts that may trigger immune responses or injection site reactions