B12 supplements can help with your symptoms, but for the best results, injections are much more potent than pills.
When you eat a supplement or any pill-based medication, it first must go through your digestive system. This process interferes with the necessary areas receiving many of the benefits of a pill, weakening its total effect.
With injections, the complete vitamin is absorbed into your bloodstream, bypassing the inefficiencies of digestion. This means that you receive all of the potential benefits of the medicine–and it also means you’ll enjoy quicker results.