Tony Mangubat and his team can assess your B12 status, identify the root cause of any deficiency, and recommend the treatment approach that matches your individual needs
So, there is no one-size-fits-all answer
I was diagnosed with low B12 almost 2 years ago and while I had to diagnose myself, my GP was very helpful and seemingly knowledgeable after it was discovered
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Also tell the pharmacist if you are pregnant or breastfeeding, have relevant medical conditions, or take medicines, herbal products, vitamins or supplements