b12 injection single dose Vitamin 12 and other B vitamins such as vitamin B Cyanocobalamin (B12) Injection 1000 mcg/mL,
Description
Pigs: 2.5-4ml
Retrieved 10 October 2017

This is determined by the Still, if you have Medicare Part B coverage, verify what you'll owe your healthcare provider before scheduling an appointment
Hydroxocobalamin is another effective form, often used for injections and known to have a prolonged effect in the body
