He used to go to sleep with 3mg melatonin and a story tape and sleep for 11 hours (lucky me, i know). Melatonin is a natural hormone that can be taken in supplement form, which has shown promise for improving sleep patterns in children who have adhd. You Just Wanna Dance Autism Aspergers Autism Autism Activities You can continue melatonin as long as it helps your child’s sleep. Melatonin not working for autistic child . After all, melatonin is natural, right? People who take melatonin daily might not see a reason to stop. In some children, melatonin works to start with, and then stops working. It's typically thought of in the general population as some sort of a sleep hormone, and it certainly does impact sleep. If you get the okay from your doctor, they will most likely recommend that your child starts on a low dose of melatonin supplements (.5mg to 1mg are the lowest). That's not true, especially for kids, experts say. It must be given at the same time ...