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b12 injections and low potassium after Vitamin B12 Injection Service Are Vitamin B12 Shots Right
Description
J Med Chem 58(19):77497762

B12 definitely can do this but it is more common for other B vitamins to do this

The use of sdAbs such as [ 68 Ga]Ga-NOTA-Nb1053 allows same-day imaging one hour after injection with high target-to-background ratios, avoiding concerns associated with non-specific bone accumulation seen with 89 Zr-labeled mAb immunoPET techniques
They work well and help with my energy levels

And, indeed, when you put all the observational studies together, we find there is no signicant correlation between the levels of B12 in the blood and lung cancer, whether or not you smoked