People may not be able to take vitamin B12 shots if they have a history of sensitivity to vitamin B12
Every fat-metabolism, NAD+, SIRT1 and lean-mass effect described above is preclinical (rodent or cell) only and should be read as a hypothesis, not an established human benefit
Progressive destruction of the cells that line the stomach causes decreased secretion of acid and enzymes required to release food-bound vitamin B 12 (5)
Any discomfort is easily treated with over-the-counter pain medication, allowing patients to jump back into their activities without hesitation
Clean the injection site with alcohol and put a bandage over it
In the pursuit of optimal health, people are constantly searching for ways to feel better, look better, and perform better