how to give b12 im injection Instruction Guide for Intramuscular (IM) Self-injection of Methylcobalamin 1mg/5mg The Truth About B12 Injections:

If you have a significant deficiency, you might start to notice an improvement in your energy and mental clarity within the first few days or after a couple of injections

Aging and longevity are popular topics of modern research, and many inroads have been made to define specific factors that affect the aging process

Journal of Clinical Medicine , 9 (2), 474

Contraindications include active infection at the injection site, severe thrombocytopenia, or anticoagulation therapy requiring provider clearance

However, that does not mean you should not, at the very least, not with the permission or direction of a physician or other health professional