Typical doses are as follows: Multivitamins usually contain 5 mcg to 25 mcg of vitamin B12
For example, concurrent use of chloramphenicol (an antibiotic) may attenuate the hematologic response to vitamin B therapy
(3) Sun WD, Zhu XJ, Li JJ, Mei YZ, Li WS, Li JH
Severe deficiency can contribute to fatty liver changes, which is one reason choline gets framed as liver support. Details are summarized in the NIH ODS Choline fact sheet for health professionals
There are no known significant interactions between injectable B12 and food, as the injection bypasses the entire digestive system
A dose of 1,000 mcg is often used, mainly for severe cases or initial treatment