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Use a sterile needle and syringe for each injection
Results Table 1 summarizes the characteristics of the study population ( N = 4,571), stratified by tertiles of serum vitamin B12 levels
When it comes to supplements, taking high doses of vitamin C at the same time as your B12 shot might slightly lower the amount of B12 your body can use, but this is more relevant for oral B12 supplements than injections
Less common but potential effects: Muscle cramps or mild swelling
Heres why shots work better: They skip the digestive system They release from the muscle They have a stronger effect on red blood cell production They provide better support for brain and nerve health Better retention is seen in people with a deficiency How to Tell If Your B12 Shot Is Wearing Off Recognizing when your shot is losing its effect can help you plan your next dose on time
