The National Institute of Health recommends about 2.4 micrograms of Vitamin B12 per day for anyone over the age of 14, with slightly higher recommendations if youre pregnant (2.6mcg) or lactating (2.8mcg)
[108] In addition, certain drugs may interfere with laboratory tests for the vitamin, such as amoxicillin, erythromycin, methotrexate and pyrimethamine
Look out for fatigue , weakness , and neurological changes like numbness
Second step is to ensure the observation by carrying out the laboratory tests
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