Tell your prescribing doctor if you have any of these conditions, which can increase B12 shot side effects: An allergy to cobalt Kidney disease Severe megaloblastic anemia Side Effects from B12 Shots The most common B12 shot side effect is swelling at the injection site
The best method depends on you, your need, and your comfort level with B12 shots and the subcutaneous method may be the most useful, safe, and convenient way for you
There's really no ideal injection site
Without enough of it, the body cannot function at its best
The effect of long-term homocysteine-lowering on carotid intima-media thickness and flow-mediated vasodilation in stroke patients: a randomized controlled trial and meta-analysis
Clinicians will typically try standard prenatal vitamins or oral supplementation first, resorting to IM/IV B-complex therapy if those are inadequate or not feasible