Clinically proven to prevent and reduce the number of colds, sore throats, and ear infections in children aged 3 to 10. Made from oyster mushroom extract (pleuran). Reduces frequency of colds by 40% and ear infections by 60%. Directions: 1mL per 11lbs of body weight once daily for 3 to 6 months. Warnings: Not suitable for children under 3, those allergic to mushrooms, or on immunosuppressive treatment.