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.