How Often Should You Get B12 Injections? Infusion For Health Optimal Vitamin B12 Dosage and Treating Deficiency Have you ever had brain fog?? It's awful! Vitamin B12 injections are quick and easy and can help you boost your energy, metabolism & immune system. If you're in need of some Everywhere you turn nowadays, people are harping on about B12 injections. It's obvious why, though: they are especially good in the autumn winter months when many of us look and feel a bit