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Is Methylcobalamin B12 safe and FDA-approved
For healthy adults, the Reference Nutrient Intake (RNI) established by the UK Department of Health is 1.5 micrograms (g) daily
If you have certain digestive disorders, including pernicious anemia, or have had gastric bypass surgery, oral B12 will simply not work because you can't absorb it correctly
Research facilities should store these compounds in cool dry conditions away from direct sunlight to preserve chemical stability and consistent results
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