My nine year old has sleep issues would melatonin be able to help?  

My response you may not like but I'm putting my two cents in anyway.The person you should be asking this question to is a DOCTOR not the general public on My Lot. No offense My Lotters but when it comes to a childs well being or for that matter anyones health a doctor you know and trust is always the best way to go. You know yourself that here on my lot you will have some people who agree with you and say yes give your child melatonin. Others will say try this or that instead. Your daughter is suffering from a sleep disorder and needs to be seen by a professional. Loving your daughter means getting the best help for her not asking the general public. Her disorder may be more serious then you think and by giving her over the counter items may worsen instead of help her. You need to find out the cause of the problem not try a bandade to help.

My doctor suggested I try melatonin for sleep, but it says on my bottle that it is "NOT INTENDED FOR PEOPLE UNDER 18". Also, I find that sometimes when I use it i feel really sick in the morning. I would avoid it. See a doctor and get something more appropriate for a 9 year old.