My 4 year son have cold cough...plz tell what to do n what to give increase immunity...Is Yakult is good for kids

A. hi give hiimalaya septilin syrup 2.5ml as a good immunity booster you can start with all home cooked foods that are easily digestible and nutritious . for older babies encourage on the importance of handwashing and keep the nails trimmed . give immunity boosting meals that include green leafy vegetables, pulses, sources of animal protein like lean meat fish eggs . give a natural probiotics like curd butter milk yogurt . give seasonal fruits vegetables as rich sources of Vitamin and mineral. give dry fruit nuts like walnut almond cashew. Give sufficient Fluids to maintain hydration