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Elevated B12 levels often indicate underlying health conditions such as liver disease, kidney dysfunction, or haematological disorders rather than simple overconsumption
The benefits tend to plateau after about six months, and increased dosages may lead to more side effects [1]
If youre older than 75, youre at increased risk for low levels of vitamin B12
Such information is not intended to diagnose, prevent, treat, or cure any medical condition, nor should it be relied upon as a substitute for professional medical advice, diagnosis, or treatment
What to Expect Before Getting a B12 Shot A nurse or doctor will confirm your deficiency Injection is usually given in the shoulder Slight pinch or sting for 23 seconds Possible brief dizziness or tingling Pre-shot tips: Eat something beforehand Wear loose clothing Stay seated for 10 minutes after What to Expect After Getting a B12 Shot Slight soreness at the injection site Redness or bruising (rare but not harmful) Headache or tiredness in the first 24 hours Most feel normal or better after 12 days Aftercare: Drink water Avoid strenuous activity if dizzy Monitor for swelling or allergy signs Alternatives to B12 Injections: Supplements and Food Sources Not everyone wants or needs a shot
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