Do not lower the dose or extend the time between injections on your own
A vitamin B12 injection is a shot of concentrated B12 that is administered directly into the muscle
Che M, Iliescu E, Thanabalasingam S, Day AG, White CA
Interference With Clinical Laboratory Evaluations And Clinical Methods Clinical Laboratory Evaluations Because of its deep red color, hydroxocobalamin has been found to interfere with colorimetric determination of certain laboratory parameters (e.g., clinical chemistry, hematology, coagulation, and urine parameters)
But what were finding is that a lot of people are finding it through compounding pharmacies. While compounding pharmacies are commonly used in the pharmaceutical industry, there also is a black market for some drugs, Kenkare said