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Low levels of vitamin B can affect everything from your energy and mood to memory, sleep, and immune function
Use of compounded medications involves potential risks and should be discussed with a qualified healthcare provider
Vitamin B12 dosage The average recommended daily amounts, measured in micrograms, vary by age: Infants up to age 6 months: 0.4 micrograms Babies aged 7-12 months: 0.5 micrograms Children aged 1-3 years: 0.9 micrograms Kids aged 4-8 years: 1.2 micrograms Children aged 9-13 years: 1.8 micrograms Teens aged 14-18 years: 2.4 micrograms Adults (19+ years): 2.4 micrograms Pregnant: 2.6 micrograms Breastfeeding: 2.8 micrograms Vitamin B12 foods You can get vitamin B12 from animal products, which have it naturally, or from foods that have been fortified with it
NICE NG28 and the MHRA advise considering B12 monitoring in long-term metformin users who have symptoms or risk factors for deficiency, as metformin can impair B12 absorption in the terminal ileum
Older adults may aim to maintain B12 levels as absorption naturally declines with age
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