why do i feel tired after my b12 injection Worse Injection? · PA Relief Feeling worse after B12 Injection:

If you are administering vitamin B12 injections at home, there are specific instructions you need to remember

If the rash lasts or gets worse, its best to see a doctor

Conlon N, et al

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These effects can include fatigue and weakness, numbness and tingling in the hands and feet, and memory loss and cognitive decline

To find out if your insurance will cover the injections, review your policy details regarding injectable medications and preventive care, consult your healthcare provider to determine if they can document a medical necessity (which can increase the likelihood of coverage), and contact your insurance company directly to inquire about specifics like co-pays, deductibles, and any prior authorization requirements