need someone to administer my b12 injections How self-inject intramuscular vitamin - Overview How to Administer a B12
Description
Avoid the inner thigh (contains major blood vessels and nerves), the area too close to the knee, and the area near the hip bone

But if you have a medically diagnosed deficiency, you can get these injections for free through the NHS

IV magnesium may be used to improve athletic performance and reduce muscle soreness

Feeling fine doesnt mean your B12 is fine
activates all liver functions