JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

A randomized placebo-controlled trial of iron supplementation in breastfed young infants initiated on complementary feeding: effect on haematological status

Jitender Nagpal, H P S Sachdev, Tejinder Singh, V Mallika
Journal of Health, Population, and Nutrition 2004, 22 (2): 203-11
15473523
To combat iron deficiency manifesting around six months of age, iron-fortified complementary feeding has been recommended. In developing countries, in view of the poor bioavailability of iron from predominantly cereal-based diets and the high cost of fortification, medicinal iron supplementation is an alternative intervention. This double-blind randomized placebo-controlled trial was conducted from April 1999 to March 2000 in the Out-patient Department of a tertiary hospital in New Delhi, India, to evaluate the haematological effects of medicinal iron supplementation to breastfed young infants initiated on complementary feeding. One hundred healthy non-low birth-weight, predominantly breastfed infants aged 4-6 months were randomized into two groups to receive either iron (2 mg/kg/day) (IS group; n=49) or placebo drops (P group; n=51) beginning with the initiation of home-based non-fortified complementary feeding. Haematological parameters and anthropometry of mothers and infants were measured at baseline and repeated for infants after four and eight weeks of recruitment. Seventy-one subjects (35 in the IS group and the 36 in P group) came for the first follow-up, and of these, 43 (19 in the IS group and 24 in the P group) reported for the second visit. The adjusted (for maternal and baseline infant ferritin) serum ferritin levels were significantly higher in the IS group at both the follow-ups (p=0.006). The adjusted (for maternal ferritin and baseline infant ferritin) change in haemoglobin was significantly higher only at the second follow-up (0.7 g/dL; 95% confidence interval [CI] 0.3-1.0 g/dL). The adjusted rise in haemoglobin was higher in initially anaemic infants (at second follow-up by 1 g/dL; 95% CI 0.5-1.6 g/dL). Medicinal iron supplementation, at the time of initiating complementary feeding, to breastfed young infants resulted in an elevation of serum ferritin and haemoglobin. The response was higher in initially anaemic infants. From a programmatic perspective, evidence needs to be generated on the relative merits of selective (anaemic) versus general supplementation and daily versus weekly supplementation.

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