Bypasses digestion: Injections go directly into the muscle tissue, making them ideal for people with malabsorption issues (e.g., pernicious anemia, gastrointestinal surgery, Crohn’s disease).

Faster effects: More rapid correction of B12 deficiency compared to oral supplements.

Treats B12 deficiency: Prevents and reverses symptoms like fatigue, weakness, memory problems, numbness, and tingling.

Prevents anemia: Helps the body produce red blood cells, preventing megaloblastic anemia

Maintains nerve function: B12 is essential for myelin sheath maintenance, which protects nerves.

May help reduce symptoms like neuropathy or nerve pain, especially in diabetic patients or those with neurological conditions.

Can increase energy levels in those with low B12.

May help improve mood by aiding in serotonin production, possibly benefiting people with depression linked to deficiency.

Some evidence suggests B12 injections may slow cognitive decline in older adults with low B12 levels, though more research is needed.

Essential for vegans and vegetarians, who may not get enough B12 from plant-based diets.

Infrequent dosing: Monthly injections (or less often, depending on the protocol) can be more convenient than daily oral pills.