5-amino-1mq third party tested What are the Different Types of B12? Cyanocobalamin (B12) Injection 1000 mcg/mL,

You have atrophic gastritis, an inflammation of the stomach lining

Sensitivity or Allergies to B12 or Its Components: Some individuals may have an allergic reaction to the preservatives or additives in B12 injections, especially those with known sensitivities to certain medications or substances

Most antibiotics, methotrexate, and pyrimethamine invalidate folic acid and vitamin B12 diagnostic microbiological blood assays

Its the difference between hoping for a solution and knowing exactly what your body needs

A subcutaneous (under-the-skin) vial format exists, but the dose volume math makes injection awkward at common doses