Table 1.

Treatment groups and oral treatment regimens of the study participants. A randomized, double-blind, and placebo-controlled clinical trial of zinc, vitamin A, and glutamine supplementation in Brazilian shanty-town children from Fortaleza, CE, northeastern Brazil, during June 2000 and August 2004, with follow-up between June 2000 and December 2007.

Treatment Group	Oral Treatment Regimen
Placebo	Placebo*) (Placebo glutamine+Placebo zinc+Placebo vitamin A)
Glutamine	Glutamine**)+Placebo zinc+Placebo vitamin A
Zinc	Zinc†+Placebo glutamine+Placebo vitamin A
Vitamin A	Vitamin A‡)+Placebo zinc+Placebo glutamine
Glutamine+Zinc	Glutamine**)+Zinc†+Placebo vitamin A
Glutamine+Vitamin A	Glutamine**)+Vitamin A‡)+Placebo zinc
Zinc+Vitamin A	Zinc†+Vitamin A‡)+Placebo glutamine
Glutamine+Zinc+Vitamin A	Glutamine**)+Zinc†+Vitamin A‡)

^*Isomolar glycine doses (8.3 g/day) over ten days started at one month of the study protocol; zinc vehicle (Tanjal juice) twice weekly for twelve months; placebo retinol = vitamin E (tocopherol 40 IU) each for four months at 0, four, and eight months.

^**Oral glutamine (16.2 g/day) for ten days starting at one month of the study protocol. † Zinc (zinc acetate) 40 mg twice weekly for 12 months.

^‡Vitamin A (retinyl palmitate) 100,000 IU for children <12 months or 200,000 IU for children at least 12 months old, given as one dose at 0, four, and eight months of the study protocol.