best way to inject b12 How Give a Injection: Step-By-Step Instructions B12 Injections at Home -
Description
Intramuscular administration allows B12 to bypass hepatic metabolism and enter systemic circulation directly, which is why this route differs from oral supplementation

An average person can have enough stored B12 to last them 3 to 5 years

(Multivitamins, Performance Enhancer) Appetite stimulant, in case of pernicious anemia

NICE guideline NG198
