Several things influence how long a B12 injection lasts for you: Your current B12 levels: the lower you start, the more your body tends to hold on to, which can stretch the effect
Vitamin B12 helps promote hair growth by improving blood circulation to the scalp
If you're not deficient, these injections are unlikely to be the 'magic bullet' you're looking for
Individuals With a History of Gastric or Bariatric Surgery Surgical procedures that alter the stomach or small intestine can significantly impair absorption of B12, folate, and other B vitamins
[PMID: 12732360] PubMed record related to this compound for laboratory literature review
After each use, ensure the rubber stopper is clean and the cap is on, then return the vial to refrigerated storage