In the U.S., injectable B12 (cyanocobalamin and hydroxocobalamin) is only available with a prescription, as regulated by the FDA
If muscle gain is a goal, pair it with something else
Intravenous (IV) B12 Therapy Guidelines IV B12 therapy is a key treatment in places where taking pills isnt an option
Not only that, NAD+ injections also boost your energy levels, as well as your mental focus and clarity, which will make your weight loss journey exponentially easier
Sublingual forms are often marketed as having superior absorption, though evidence supporting this claim over standard oral tablets is limited
One of the main reasons it is hard to lose weight, especially as we age, is that we might not be producing enough of the hormones, enzymes, peptides, and amino acids that are necessary for regulating our metabolisms