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These impurities may cause irritation or reduce effectiveness

A pharmacokinetic study in rats found that oral administration produced substantial plasma concentrations, with a maximum concentration of 2252 ng/mL and an elimination half-life of approximately 6.9 hours

We often see it used to support neurological health and energy metabolism

For individuals requiring supplementation due to confirmed deficiency or malabsorption, therapeutic doses vary considerably depending on the underlying cause: Dietary deficiency : 50150 micrograms daily orally, or cyanocobalamin tablets as prescribed Pernicious anaemia : Initially hydroxocobalamin 1 mg intramuscularly three times weekly for two weeks, then maintenance injections every two to three months [3] Neurological involvement : More intensive regimens may be required, with hydroxocobalamin injections on alternate days until symptom improvement [3] NICE guidance emphasises that supplementation should be evidence-based rather than speculative