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Vitamin B12 is a water-soluble vitamin which means any excess will be urinated out of your body (assuming you have normal kidney function), so the risk of overdose is basically non-existent
The information provided here is not a substitute for professional medical advice, diagnosis, or treatment
Vitamin B12 is available as tablets, sublingual forms, nasal products, and injections, and these are not directly interchangeable without medical advice
As the body adjusts to the dosage, they fade
doi:10.1111/j.1467-789X.2007.00413.x Smith, R
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