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The major difference between a B12 shot and an oral supplement is that the B12 shots or injectables are directly put into the bloodstream while the oral ones take time to ingest through the bodys digestive system

The 2 inch wide variety is ideal for smaller areas (Foot, Wrist), while the 3 inch wide style is better for larger areas (Back, Knee)

it depends on your skin concern, your lifestyle, and your realistic expectations

Vitamin B12 shots are often prescribed for people with: Pernicious anemia (autoimmune destruction of intrinsic factor needed for B12 absorption) Gastrointestinal surgeries (e.g., gastric bypass, ileal resection) Crohns disease or celiac disease Chronic alcoholism Long-term use of acid-reducing medications Vegan diets without supplementation Infants or children with congenital absorption disorders (i.e., vitamin B12 for kids in clinical care) Injections ensure direct delivery into the bloodstream, bypassing the digestive system entirely