NIDO One Plus is not a breast-milk substitute but a formula specially suited to healthy young children from 1 to 3 years in addition to complementary food as part of a healthy diet. IMPORTANT NOTICE: Breast-milk is the best nutrition for your infant. Lactobacillus Protectus L. Reuteri which is a clinically proven probiotic that helps strengthen toddlers? immunity. Iron, Zinc, Selenium, Vitamin A, C and D to support healthy growth and development.