Hello... could you tell me one thing Nutrolin -B syrup when should I use before food or after food for my 3.2 years old boy... please tell me once

A. Nutrolin-B Syrup 60 ml is used to restore and maintain the natural balance of good bacteria in the gastrointestinal tract. Nutrolin-B Syrup 60 ml helps in improving digestion, provides relief from indigestion and also helps treat diarrhoea.