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Who Should Not Supplement Without Testing Taking vitamin D3 and B12 supplements without knowing your actual levels can be ineffective or harmful
Chang helps patients manage and reverse the effects of vitamin B12 deficiency with precision and care
The According to the ODS, the recommended dietary allowance (RDA) of vitamin B12 by age is as follows: 0 to 6 months: 0.4 micrograms (mcg) 7 to 12 months: 0.5 mcg 1 to 3 years: 0.9 mcg 4 to 8 years: 1.2 mcg 9 to 13 years: 1.8 mcg 14 years and older: 2.4 mcg During pregnancy, the RDA of vitamin B12 is 2.6 mcg
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