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But you can also use B12 shots for cold and flu symptom relief
That said, Vitamin B12 injections have been shown to provide relief for several issues, including: What Do These Injections Involve
Discontinuation due to side effects was 7% (Wilding et al., NEJM 2021)
If you suspect you might have a B12 deficiency, the best place to start is with a medical evaluation
Range of motion, strength testing, or sport-specific performance metrics provide measurable benchmarks for comparison
The needle is small and the process is brief
