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b12 injections subcutaneous or im for Energy: Benefits and How It Works Best Vitamin B12 Injection Sites
Description
An enzyme called NNMT (nicotinamide N-methyltransferase) drains the NAD+ salvage pathway by methylating nicotinamide, one of NAD+'s precursors

The enzyme also keeps mitochondria efficient and helps it perform under stress

Support Mood & Brain Function B12 helps synthesize mood-related neurotransmitters like serotonin and dopamine
The primary storage unit for vitamins such as A, D, E, K, and B12 is the liver
