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SAMAR K. BHOWMICK, MD; KEVIN R. JOHNSON, MD
USAF Medical Center Department of Pediatrics Keesler, MS 39534-5300

KENNETH R. RETTIG, MD
University of South Alabama Department of Pediatrics 1005 Medical Science Bldg Mobile, AL 36688

Am J Dis Child. 1992;146(1):14.

Abstract
In Reply.—We thank Dr Blandino for the letter and the opportunity to clarify the two points that he addresses. Vitamin D supplementation may not be necessary for those infants who are breast-fed for 6 months or less,^1,2 whose mothers have either adequate stores or synthesis or intake of vitamin D while breast-feeding,³ and who receive adequate exposure to sunshine.⁴ Although we recommended vitamin D supplementation for all breast-fed black infants, in practice, we supplement the recommended dosage of vitamin D in all breast-fed infants.

An intake of 400IU of vitamin D is the standard recommended daily allowance for infants for prevention of rickets.^5,6 The Food and Nutrition Board of the National Academy of Science also recommends 400 IU of vitamin D daily for children up to age 18 years.⁶ An intake of 400 IU of vitamin D is safe, nontoxic, and appropriate.^5,6 In fact, as little as 100 IU of vitamin D may prevent rickets.⁶

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