where should you inject b12 Vitamin Injection Dosage Vitamin B12 Injection Sites: All

An investigation by the Texas Medical Board shows that the solution Cleveland received intravenously included total parenteral nutrition, or TPN, a potent, concentrated mix of electrolytes that doctors use to feed patients who are physically unable to consume adequate nutrition on their own

Gastroenterology 137 (5), 1716-24.e12

For a fuller comparison, see bacteriostatic water vs sterile water

Many of these home kits only measure total B12, and not other markers in your blood, such as methylmalonic acid or homocysteine, which are better signs of deficiency, Ren says

A figure pulled from a vendor page tells you nothing about whether the compound is right for you, whether it interacts with your medications, or whether a better-established option exists for your goal