We use thigh muscle for ease when sitting down
Theyre generally considered safe if taken in recommended amounts but may interact with some prescription drugs
Once used up, cyanocobalamin could theoretically cause cyanide toxicity particularly in those with kidney failure
The community starts at doses equivalent to the lowest FDA titration step (0.25 mg) and increases cautiously
There is no advantage to using the light sensitive forms of cobalamin, such as methylB 12 or adenosylB 12 , instead of the stable cyano or hydroxy forms, which are readily converted in the body into the coenzyme forms, methylB 12 and adenosylB 12
People with absorption disorders, older adults, vegans, vegetarians, and those with certain stomach or intestinal conditions may be at higher risk