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how much vitamin b12 is in the injection for Cyanocobalamin 1,000 mcg, 25/Box (Rx) — Mountainside Medical What Are B12 Injections? And
Description
This is due to the inhibition of DNA synthesis (specifically purines and thymidine)

The effects of vitamin B12 injections can vary depending on the individuals health status and the severity of the deficiency

However, vegans and vegetarians are not the only ones who are deficient

The deltoid cannot be used if that area is very thin or underused
