Empty entire contents of packet onto tongue and swallow.For best taste, do not chew granules.Do not take more than 6 doses in any 24-hour period.Age - Adults and children 12 years and over. Dose - 2 to 4 packets every 4 hours.Age - Children 6 years to under 12 years. Dose - 1 to 2 packets every 4 hours.Age - Children 4 years to under 6 years. Dose - 1 packet every 4 hours.Children under 4 years - do not use.Other information: Each packet contains: magnesium 6 mg and sodium 3mg.Phenylketonurics: Contains phenylalanine 1 mg per packet.Store between 20-25 degrees C (68-77 degrees F).Tamper evident: do not use if carton is open or if packets are torn or open.