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Mild side effects can include redness or swelling at the injection site, lightheadedness, or an upset stomach
More common with higher B12 concentrations (5,000 mcg vs
[13] If you're injecting someone else, let them know you're about to inject the supplement
There is no one answer to the question of whether B12 injections or oral supplements are better
The metabolism and elimination of NAD+ (and its by-products) could be altered in advanced hepatic or renal dysfunction, and high-dose NAD+ might theoretically affect cardiovascular dynamics, so practitioners generally avoid or closely supervise NAD+ use in such settings
observed in Nature Medicine , NNMT inhibition in adipose tissue produced favorable body composition changes without negatively impacting muscle mass (Kraus et al., Nature Medicine )
