what level of b12 requires injections Vitamin A Vitamin B12 injection is a quick shot that gives your body vitamin B12 directly into the muscle. This helps your body absorb it faster than tablets. Vitamin B12 helps B-12 Injections - La Bella

With a water soluble vitamin, such as B12, this is basically going to render the supplement useless, as it is going to dissipate the potency of the dosage which you are taking

At the same time, B12 immediately binds to a special transport protein

Insurance plans often cover B12-vitamin Shots as an option to injections and pills

In contrast, it would appear that the neurologic effects of cobalamin deficiency are due to metabolic disturbances unrelated to purine synthesis because the neurologic deficits may develop independently of the hematologic abnormalities, and folate supplementation will not prevent or reverse these deficits

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