For infants under 1 year of age: Consult your doctor. For children 1 year and older and adults: Begin with small frequent sips every 15 minutes, increasing serving size as tolerated. Continue for as long as diarrhea is present. To maintain proper hydration, 1-2 liters (32 to 64 fl oz) per day of Pedialyte AdvancedCare may be needed per day. Consult your doctor if vomiting, fever, or diarrhea continues beyond 24 hours or if consumption needs are greater than 2 liters (64 fl oz) per day