 The project team will enroll a total of 3,400 children whose ages will range from 6-23 months. Children will be randomly assigned to one of four study group: 1 preventive zinc supplementation provided as LI-MNP plus ORS and placebo tablets for treatment of diarrhea; 2 placebo preventive supplementation provided as placebo powder plus ORS and placebo tablets for diarrhea ; 3 preventive zinc supplementation provided as dispersible zinc tablets containing 7 mg zinc, to be given between meals plus ORS and placebo tablets for diarrhea; and 4 therapeutic zinc supplementation provided as dispersible tablets containing 20 mg zinc for diarrhea plus ORS and placebo preventive tablets. 