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Athletes taking metformin, proton pump inhibitors, or certain antibiotics should also consider their increased deficiency risk

It's all so very complicated that you would probably benefit from seeing your GP, who should try and to sort this out for you

[DOI] [PubMed] [Google Scholar] 112.Siegrist-Kaiser CA, Pauli V, Juge-Aubry CE, Boss O, Pernin A, et al

After your healthcare provider analyzes your test results, they may review different treatment plan options to help you optimize your health and improve quality of life

These products fall outside conventional NHS prescribing practices

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