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A favorable A1C does not rule out hypoglycemic episodes

The Basics: Why Vitamin B12 Matters Vitamin B12 (cobalamin) is more than an "energy vitamin." Your body relies on it for several core functions, and a true deficiency can cause real symptoms

Patients and healthcare professionals should report any suspected side effects, adverse reactions, or defective or falsified products to the MHRA via the Yellow Card scheme (available at yellowcard.mhra.gov.uk)

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But given the wide range of symptoms and the gradual rate at which they can appear, the condition is often overlooked or confused with something else