Writing professionally since 1997, she has written articles covering business and finance, health, fitness, parenting and senior living issues for both print and online publications. Can i give my one year old melatonin to help him sleep at night instead of the day? Can Melatonin Really Help You Sleep Better? The hormone helps the body maintain its circadian rhythm -- the internal clock that determines a person's sleep-wake cycle. To introduce a CNS depressant would potentially have fatal consequences. My son`s doctor put him on adhd meds and said to give him melatonin to help him sleep. Dr. Peter Nieman, a member of the American Academy of Pediatrics and host of Healthy Kids Canada, points out that as many as 25 percent of children have difficulty falling asleep. What to give a 2 yr old who got into a bottle of melatonin? Giving melatonin to children 7 and 5 years old. As with any dietary supplement, only give your child melatonin under a doctor's direction. How much of a 1mg bottle of melatonin would you give to a one year old? If you want to give your child melatonin, you always should consult your doctor first to determine the appropriate dosage. Address other conditions that affect sleeplessness, such as anxiety, nutrition, and illness. Increased healing rates in gastric and duodenal ulcers have been found in a small number of studies when melatonin was used as adjunctive therapy. Ann Pressler, CNP, fields this one.