Strategies to improve adherence to intervention
After starting the intervention, online video calls (WhatsApp or Viber) will be made to caregivers of the selected elderly care institution on a daily basis. The first call will be made to remind participants to ingest either treatment (200 mL of Entrasol Platinum) or control (200 mL of water), after dinner. A second call will be made to make sure whether all participants in the intervention group have consumed the supplement and all the participants in the control group have consumed an equal quantity of water. There will be random visits from the data collection team during the administration of ONS.Compliance with ONS intake will be calculated over 12 weeks (84 days) using the participant's intake record and return of balance product containers. The percentage of compliance will be calculated by the following formula:The number of supplement containers consumed is divided by the number of supplement containers instructed to consume, multiplied by 100.