what size needle to inject b12 should be used for injections B12 Shots: Benefits, Uses, Safety, Cost & How They Work size needle for b12 injection
Description
Preferred sites are the periumbilical abdomen (at least 2 cm from the navel), lateral thighs, and the dorsal upper arm

They do not suit human use, and trained staff follow strict laboratory safety rules at all times
for athletes this is a regulatory hazard independent of pharmacology

However, some individuals may experience mild side effects such as injection site pain, redness, swelling, nausea, or dizziness

These usually improved with time or if the dose was changed
