US$ 23.22
vit b12 injection in vessel Treating Severe Vitamin Deficiency | B12 IM Optimal B12 Injection Sites for
Description
Brain zaps and body jolting stopped about 2 weeks after they started, but neuropathy, sinus issues, headaches, and digestive issues have continued

Preventive vs

Why Is Everyone Talking About B12 for Energy

Colangelo LA, Liu K, Gapstur SM (2004) Insulin-like growth factor-1, insulin-like growth factor binding protein-3, and cardiovascular disease risk factors in young black men and white men: the CARDIA Male Hormone Study

As you can see from the list below, some of those medical reasons can be quite serious
