can b12 injections cause fever

https://idinhealth.com/wp-content/uploads/2022/02/IPBBC157PUREORAL.jpg Injection Frequency : For patients requiring frequent B12 injections, using a thinner gauge needle (especially for SC injections) can reduce tissue trauma and discomfort over time Specification:10 mg Pain relief injection Benefits and Risks of Vitamin B12 Injections - Swift Pharmacy

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