Sleep Well Tonight - Smurfs Kids Restful Sleep Gummies support occasional sleeplessness for your child during their important years of growth and development. These melatonin kids sleep gummies are safe, effective and non-habit forming.superior Formula - Melatonin plus an herbal sleep blend provides three important ingredients to ensure your child comfortably falls asleep and stays asleep. Each gummy provides 1 mg of Melatonin plus 50 mg of herbals, including Chamomile and Lemon Balm - more than other brands.