 Preventive zinc supplements can be delivered either as a single nutrient zinc supplement or as a multiple micronutrient MMN supplement, such as micronutrient powders MNP added to young childrens complementary food. Available research indicates that zinc delivered in MNP at the currently recommended dose 4.1-5 mgd has not had a measurable impact on zinc-related functional outcomes, like growth and prevention of infection. Moreover, some studies of MMN supplements have detected a greater incidence of diarrhea in the MMN group than in the non-intervention or placebo control groups. Thus, despite the beneficial effects of MNP on prevention of anemia and enhancing iron status, questions have been raised about the desirability of providing zinc in MNP containing iron and other nutrients versus a single nutrient formulation offered between meals. For these reasons, the present study is designed to compare both the zinc delivery plan i.e., preventive versus therapeutic supplementation as well as the form of delivering zinc i.e., as a dispersible tablet given between meals or as a MNP given with meals and to permit assessment of any adverse effects of MNP on the incidence of diarrhea. 