Parents are advised to use caution when using melatonin for their children as amounts of doses are mislabeled. Please make sure the bottle of melatonin has the USP label. For severe sleep disturbance, doses of 1-3mg may be used after discussion with your doctor. Higher doses of melatonin and any amount of CBD in sleep supplements are strongly discouraged for children. USP stands for the U.S. Pharmacopeia, which is an organization that bridges the gap between lack of government scrutiny of dietary supplements and the consumer's need for safe vitamins.