Intramuscular vs Subcutaneous Parenteral administration of vitamin B-12 via injection has been standard protocol for decades, according to the Centers for Disease Control and Prevention
I was purchasing B-12 filled needles exact dose from my vet prior to this
Adding thiamine (B1) to vitamin B12 (B12) in Tiaminal B12 injections shows the value of treating all vitamins
For these individuals, vitamin B12 injections are often the most effective way to restore healthy B12 levels because they bypass the digestive system entirely, delivering the vitamin directly into the bloodstream for maximum absorption (around 95% compared to 25-50% for oral supplements)
It stimulates lipolysis (the breakdown of fat) and inhibits lipogenesis (the formation of new fat)
According to the National Heart, Lung, and Blood Institute, this absorption failure makes B12 injections the primary and most effective treatment, as they deliver the nutrient directly where your body can use it, bypassing the digestive system entirely