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A single B12 injection costs $30
With neurological symptoms: 1000 g intramuscularly on alternate days should be continued for up to three weeks or until there is no further improvement
2025 [cited 31 Dec 2025] Cyanocobalamin (intramuscular route)-Description and Brand Names - Mayo Clinic [Internet]
You can get the benefits more quickly and effectively through injections, however
Unlike oral supplements, which must pass through the digestive system, injections provide direct delivery into the bloodstream
Before taking Vitamin B12 Injection, inform your doctor if you: Are allergic to Vitamin B12 or cobalt Have any other food or medicine allergies An eye disease called as Leber's optic neuropathy A slow growing blood cancer where your bone marrow makes too many red blood cells (polycythemia vera) Gout (high uric acid levels in body) Iron or folic acid deficiency anemia Low potassium levels in your blood Drug interactions It is important to tell your healthcare professional about all other medicines that you have taken recently including any kind of supplements and non-prescription drugs
