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PMC 370693
Fatigue is a common symptom when your body lacks enough vitamin B12 because your cells dont get the oxygen and energy they need
Healthcare professionals should refer to MHRA guidance on the supply of unlicensed medicinal products ('specials') and GMC prescribing guidance for further detail
See our CJC-1295 guide for pharmacology and dosing background
They flag claims where D50.9 persists across multiple visits while labs show a documentable cause that never makes it into the assessment
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