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Deficiency of vitamin B12 and its relation with neurological disorders: A review
The MHRA recommends monitoring B12 levels in patients on long-term metformin treatment
When to reassess If GI symptoms worsen instead of improving over the first 2-3 weeks of a step, if you cannot keep food down, or if you have severe persistent abdominal pain (especially with back radiation), pause and consult a qualified clinician
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