best needle for b12 injection Injections B12 vitamin Store Needle and
Description
It works by inhibiting the enzyme NNMT (nicotinamide N-methyltransferase), which plays a role in energy metabolism and fat storage
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Injections are one option a provider may recommend when a deficiency is confirmed, especially when absorption is a concern
A deficiency may cause hair loss, but extra B12 only helps if levels are low
