Endocrine clinical pharmacist Diana Isaacs, PharmD, explains how both work
239.) Available from: Vitamin B12, Fact Sheet for Health Professionals, National Institutes of Health, Office of Dietary Supplements Vitamin B12, Fact Sheet for Health Professionals, National Institutes of Health, Office of Dietary Supplements Homocysteine, Cleveland Clinic,
Without barriers such as digestion, the body absorbs 15-97% of the injected B12, making injections much more efficient at raising blood levels quickly even if the pill dose is higher
An IV infusion is delivered in clinic and allows a higher dose to enter the bloodstream directly, which is why it is often chosen when a fuller, faster onset is the goal
They are also needed for the formation of red blood cells that can help with wound healing
B12 regulates the amount of homocysteine in your blood and helps break it down