how does b12 injections work Vitamin Injections: What You Need To Know B12 Shots vs. IV Infusions:

Though each method delivers nutrients directly to your bloodstream for enhanced vitamin utilization, an IV infusion also boosts your hydration and packs a greater punch than smaller vitamin shots

Vitamin B12 for hair, skin, and nails If you have a very low level of B12, you may be prone to hyperpigmentation (dark spots) on your skin, vitiligo (light patches on your skin), mouth ulcers, eczema, and acne

B12 injections are a fast, non-invasive way to replenish a vital nutrient that can often be lacking due to poor diet, stress, or other factors

The switch involves two changes simultaneously: the B12 form (cyanocobalamin to methylcobalamin) and the delivery method (injection to oral)