The document discusses the use of zinc supplementation in the treatment of diarrhoeal disease in children. It notes that while oral rehydration therapy saves lives, it does not reduce the duration of diarrhea. The WHO and UNICEF now recommend daily zinc supplements of 20 mg for 10-14 days for children ages 6 months to 5 years and 10 mg per day for infants under 6 months when experiencing acute diarrhea. Zinc has been shown to reduce the duration and severity of acute, persistent, and bloody diarrhea episodes as well as decrease stool volume and the proportion of episodes lasting over 7 days. The document concludes that zinc supplementation should be provided along with standard diarrhea treatment based on its significant beneficial impacts.