Tolerance and Safety of an Oral Nutritional Supplement

Inclusion Criteria: * Healthy volunteers * BMI range from \>18 to \<28 kg/m2 for adults with a minimum body weight of 45 kg * BMI range between the 25th and 90th percentile according to the Swiss growth charts for adolescents with a minimum body weight of 40 kg * Cohort 1: Adults aged 18+ years (6 males, 6 females) * Cohort 2: Adolescents aged 12-17 years (6 males, 6 females) * Deemed able to comply with study protocol for 2 weeks * Able to obtain written informed consent from participants and /or legal guardians Exclusion Criteria: * Pre-existing chronic medical or psychiatric conditions, as diagnosed by the treating physician * Subjects taking dietary supplements (energy supplements, protein supplements) will be excluded. Subjects can continue taking vitamin or herbal supplements during the study period. * Abnormal bowel transit, history of a gastrointestinal disorder (e.g., inflammatory bowel disease (IBD), diverticular disease, colon cancer, irritable bowel syndrome (IBS), history of chronic constipation with passage of fewer than 3 spontaneous bowel movements per week on average, or chronic or recurrent diarrhea with loose or watery bowel movements more than 3 times daily. * Recent episode of an acute gastrointestinal illness with significant gastrointestinal symptoms in the 7 days prior to enrolment. * Colonoscopy or other bowel cleansing procedures within 4 weeks prior to enrolment. * Prior use of prescription medication(s), in particular antibiotics, antacids, laxatives or other medications impacting gastrointestinal transit time, within 8 weeks prior to enrolment. * Significant medical or surgical event in the past 3 months potentially interfering with study procedures and assessments. * Known food allergy in particular cow's milk protein allergy (CMPA) or known hypersensitivity/intolerance to any other ingredients in the study product. * Known alcohol or substance abuse; specifically, alcohol intake \> 2 servings per day. A serving is 0.4 dl of strong alcohols, 1 dl of red or white wine, or 3 dl of beer. * Pregnant or lactating women or having given birth in the past 6 months prior to enrolment. * Family or hierarchical relationships with Clinical Innovation Lab staff.