b12 oral or injection tablets The Advantages of Injections Versus Supplements: Shawn Veiseh, M.D.: Family Medicine Vitamin B-12 Injections B12 Injections vs Oral Supplements:

If this test is positive then it means you definitely have Pernicious Anaemia and you will need to continue your injections every 3 months

[1] In practice, 1 mL (which provides the full 100 mg of B and B, etc.) is a common dose for general supplementation in deficient states, but clinicians may start with lower volumes for mild deficiencies or in smaller patients

But there was none of the edge I get with caffeine

This is the main factor for how long a B12 injection takes to work, offering a significant advantage over oral supplements, which must be broken down by the digestive system before they can be distributed throughout the body

There has not been a UL (upper intake level) established for B12 because it is not stored in your body and therefore, can not build up enough to cause serious adverse side effects for most people

A deficiency can lead to a type of anemia called megaloblastic anemia, causing fatigue and weakness