vitamin b12 shot injection Sandoz Injectable Solution - 1000 mcg/10 mL Vitamin B12 Injections (Cyanocobalamin Injections)
Description
Nicotinamide N-methyltransferase Inhibition Mitigates Obesity-Related Metabolic Dysfunctions

B12 injections are often recommended when levels are low or oral supplementation isnt effective

10.1161/ATVBAHA.119.312192 21 CollinsP

This is true if they continue to have trouble absorbing nutrients
