storage b12 injections Do need to be refrigerated? Compounded Methylcobalamin (Vitamin B12) Injection,
Description
Two of them are dangerous

But they require minor surgery and are often not covered by insurance

2013 Feb;143(2):142-7

Since this nutrient is kind of tricky to absorb, and because any excess is readily excreted in your urine, its both preferable and perfectly safe to take in higher supplemental doses

Injections are fast, targeted, and affordable

The combined effect may be stronger than expected