Other factors contributing to neuronal death include the aggregation of proteins into Lewy bodies, the accumulation of oxidative stress, and mitochondrial dysfunction
Zhang, C
One such study in 2012, published in the journal Obesity, found that obese individuals who received vitamin B12 injections lost an average of 3 pounds more than a placebo group over 12 weeks
Anant Vinjamoori, a Harvard-trained longevity expert, as chief medical officer of Hims
HCPCS code J3420 is used to report the injection of vitamin B-12 cyanocobalamin, up to 1000 mcg, administered by a non-oral route such as intramuscular or subcutaneous injection
The honest answer is that the human safety data is limited compared to decades-old pharmaceuticals, but the preclinical safety record across multiple species is unusually clean for a peptide with this level of biological activity