That is intentional: the two vial sizes reflect two different documented protocols and two different concentration setups, and it is a reminder never to eyeball a dose across vial sizes
If you dont want to get b12 shots then you can try eating foods rich in vitamin b such as dairy products
B12 shots are usually given into a muscle, like your upper arm or thigh
Vitamin B12 injections provide a direct and efficient method to boost your B12 levels, bypassing the digestive system and ensuring immediate absorption into the bloodstream
Molecular Weight 1817.1 g/mol Structure Ng, F
[3] Initial treatment of pernicious anemia typically consists of 1,000 mcg intramuscularly daily for one week, then weekly for four weeks, transitioning to 1,000 mcg monthly for life