where can i buy injectable b12 for humans Compounded Methylcobalamin (Vitamin B12) Injection, 5mg/mL Jarrow Formulas Methyl B-12 500

This is a commonly referenced study from 1963 claiming a half-life of 5-6 days: nature.com/articles/198200a0 Although I would not cite it as an authority, the six-day half-life has also made it onto the B12 page in Wikipedia, seemingly unchallenged

Injectable B Complex restores these levels rapidly, often resulting in a meaningful boost in stamina and a reduction in feelings of persistent tiredness within days of beginning a course

In addition to the information below, you can learn more about the benefits of vitamin B12

The app tracks Calories from alcohol as blue Calories under Other. Keep in mind that Other Calories can also include energy not directly attributable to alcohol