1000 mcg b12 injection monthly Cyanocobalamin USP mcg/mL Vitamin B12 Monthly Injection: Typical

They are not approved for human therapeutic use or consumption

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While the shots arent necessarily dangerous, theres no surety that theyll help you lose weight, either

As a result, you can get more B12 with injections than with oral supplementseven if you take higher oral doses

(Outlines contraindications for niacin therapy, including active peptic ulcer disease, active liver disease with elevated enzymes, hypersensitivity to niacin, and arterial bleeding, as well as monitoring recommendations for blood pressure, glucose, uric acid, etc., due to niacins systemic effects)

Vitamin B12 shots work faster than any oral supplement