Answered by Dr. Mohan P. Abraham

M.D., FAAFP (Family Physician) · 40 years of experience · USA

Infants and children require 400 IU per day, adults require 400-600 IU per day with adequate amount of sun exposure.

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Answered by Dr. Chandra Shekar Adelli

MBBS, Gen Med · 6 years of experience · India

Recommended dietary allowance for normal people is 400-600IU per day. For age more than 70yrs 800IU per day. For pregnant and lactating women requires 1200IU per day. Children 10-18 yrs requires 800IU per day.

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Answered by Dr. Venata Subhash Sagar Tatabhatla

MBBS · 4 years of experience · India

Infants need around 10 micrograms of vitamin per day. Healthy adults require around 15 micrograms per day irrespective of gender. Older people may need 70 micrograms per day. During pregnancy or lactation usually there is no additional requirement of vitamin D.

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