Researchers have not yet determined whether it is safe to use melatonin to treat sleep issues in babies. Newborns produce extremely low levels of melatonin, and production increases with age. Most infants establish clear circadian rhythms 6–18 weeks after birth. We suggest consulting a pediatrician or sleep specialist if a baby is not getting enough sleep. Do not give melatonin to a baby unless a doctor or another healthcare professional has advised it. A better option to use for children is Dr. Teal's Kids Melatonin 3-in-1 Body Wash it is specially formulated to be safe and hypoallergenic with gentle cleansers.