 [ Symptoms ] is it safe for my 9 year old son to take melatonin 3mg to help sleep most sites say not to give under 18 yrs old my wife is wanting to give my 9 year old son melatonin 3mg to help him sleep all i have read about melatonin is that it should not be given to children under 18 it says it can cause nightmares seizures and other side effects i feel a different method needs to be approached and not use melatonin because of these side effects is it safe for my son to take this [ Disease ] i can not examine you to determine the extent of your umbilical hernia so surgery may only be cosmetic it is really up to you to get it fixed butif it is a particular big and bulging one this may be an approach to consider talk to a general surgeon    someone who repairs these    for patient specific advice