ETOL-Elderly Study of the Efficiency of the Innovative Food Supplement in Elderly Adults

Inclusion criteria: * Subject Informed consent form (ICF) is singed * Aged at least 65 at the time of the signature of ICF * A body mass index lower than 32 kg/m2 * Willing to avoid a consumption supplementation with protein, vitamin D and vitamin B12 during the study * Willing to follow all study procedures, including attending all site visits (including blood sampling) and keeping a diary for using the product and six 24-hour dietary records (3x pre-intervention, 3x during last week of the intervention) Exclusion criteria: * Medical treatment with Vitamin D and/or Vitamin B12 * Supplementation with protein, vitamin D and/or vitamin B12 during least 2 months * Known drug and/or alcohol abuse * Known lactose/gluten intolerances/food allergies * Inadequate veins (in the opinion of the investigator) or known contraindication for venous blood withdrawal * Have chronic bowel disease (ulcerative colitis, Chron's disease, stomach or duodenal ulcer, chronic inflammation of the stomach or duodenum) * Have acute gastrointestinal infection with vomiting and / or diarrhea * Have planned general anaesthesia or colonoscopy at the time of the study * Have malabsorption syndrome * Less than 5 years after treatment for gastrointestinal cancer (stomach, duodenum or colon) * Have stomach or bowel resection * Do not have neat and functional teeth * Take regular or occasional laxative products * Use antacids (Rupurut / Rutacid / Talcit) * Mental incapacity that precludes adequate understanding or cooperation * Participation in another investigational study