A Study of an Oral Nutrition Supplement (ONS) in Children.

Inclusion Criteria: 1. Age of 24-72 months (inclusive), both genders. 2. Diagnosed with current acute upper respiratory tract infection. 3. Weight-for-age between 3rd - 15th percentile according to WHO Growth Charts. 4. Identified as a picky eater. 5. Able to consume foods and beverages orally. 6. Willing to abstain from additional non-study provided protein supplements or nutritional supplements throughout the study period. Exclusion Criteria: 1. Current illness requiring hospitalization. 2. Gastrointestinal infection and/or acute diarrhea at the time of inclusion in the study. 3. Currently taking medication that could affect absorption/metabolism of study product or weight of the child. 4. Diagnosed with recurrent respiratory infections due to cystic fibrosis, immunodeficiency syndromes, and congenital abnormalities of the respiratory tract, congenital lung and ciliary abnormalities, an unsuspected foreign body and asthma. 5. Active tuberculosis, acute hepatitis B or C, or HIV, malignancy. 6. History of diabetes mellitus. 7. Received antibiotic therapy within the last two weeks before start of the study. 8. Dysphagia, aspiration risk, difficulty in swallowing due to acquired / congenital abnormalities that would hamper oral intake of the study product. 9. Clinically significant nutritional deficiency requiring specific treatment with any other nutritional supplement (not study product).