adverse reactions to b12 injections Vitamin Injection Side Effects and Safety Vitamin B12 Side Effects: Risks

Hsieh CL, Goldsmith JA, Schaub JM, DiVenere AM, Kuo HC, Javanmardi K, et al

Allergic reactions are very rare, but if you ever experience itching, rash, or difficulty breathing after receiving a B12 injection, please seek immediate medical attention or contact our office right away

Another study provided a link between obesity in children and a lower intake of vitamin B

Consider splitting the powder into two sterile vials before reconstitution if using lower doses, or choose 50mg vials for protocols requiring less than 2mg daily

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