Vivalyte is an electrolyte drink indicated for the prevention of dehydration and maintenance of good hydration. It contains vital nutrients such as Sodium, Potassium, and Dextrose to maintain fluid balance and normal nerve and muscle function. For children, the daily electrolyte requirement is met by drinking 1 cheerpack or dissolving 1 sachet in 200 mL of water. Adults may take 2 or more cheerpacks or sachets depending on their activity level and workout intensity. It is not a treatment for acute diarrhea in children but helps to prevent dehydration and maintain hydration during fever, active play, or hot weather conditions.

So, Vivalyte is suitable for children and adults, with specific dosages available for different ages.