b12 injection in deltoid Where would you like your injection? π, The good news is youβve got options. A B12 can be safely administered into the muscle (upper arm), the thigh, or the glute., For the Vitamin B12 Intramuscular Injection Site
Description
But how long do the benefits of a vitamin B12 injection last

Injections are safe, effective and an easy way to keep your body well-balanced
Many pharmacies accept sharps containers for disposal
The standard daily dose is 1 to 2 mg subcutaneously

Allergic reactions , whilst rare, can occur and range from mild skin reactions to severe anaphylaxis