Vitamin B12 Injections
Vitamin B12 injections can treat documented deficiency and may be useful when absorption is impaired; they should not be promoted as guaranteed energy or weight loss for everyone.
Who may be at risk of deficiency?
Risk can increase with pernicious anemia, gastric or intestinal surgery, certain gastrointestinal disorders, vegan diets, older age and some long-term medications. Symptoms and laboratory context guide evaluation.
Starting price: IM vitamin B12 starts from $20 per injection. Insurance coverage, when applicable, depends on diagnosis, benefits and documentation.
Safety and evidence
Review allergy history, kidney disease, potassium risk during treatment of severe anemia and the cause of deficiency. Neurologic B12 deficiency should not be masked or delayed by relying on nonspecific wellness treatment.
How W8MD can help
W8MD reviews the reason for treatment, health history, medications, allergies, diet, relevant laboratory information, route, formulation, evidence, alternatives and cost. The plan is individualized rather than based on a universal “cocktail.”
IV and IM overview · Medical nutrition therapy · Injection safety · Who should avoid treatment? · Pricing · Nutrition encyclopedia
Ask W8MD which option is appropriate
Philadelphia: 215-676-2334 · Brooklyn: 718-946-5500
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Medical and pricing notice: General education only. Evaluation is required. An injection or infusion is not a substitute for diagnosis, balanced nutrition or evidence-based treatment. Product, dose, route, pharmacy source, availability, insurance, total price and results vary. Call 911 for an emergency.
Content reviewed for general accuracy by W8MD clinical leadership. Last reviewed September 2026.