vitamin b12 injection im or subq How to self-inject intramuscular - Overview Vitamin B12 Injection - 10mL

Intramuscular administration of vitamin B12 is often preferred for its rapid improvement in patients with severe deficiency or severe neurological symptoms

A B12 shot takes roughly 5 to 10 minutes, including preparation and the injection itself

Match the vial to the weekly dose and the 46 week use window

Rohr, M

Seek the recommendation of your health care provider to determine which form of B12 would work best with your health goals and or condition

But here are some general guidelines: Severe deficiencies: Daily shots for 1 week, then weekly shots until levels normalize Moderate deficiencies: Weekly shots until the deficiency is corrected Maintenance dosing : Monthly shots to keep B12 levels optimal Its definitely possible to take B12 shots too often