melatonin, do a search on it and sleep, this topic has been brought up many times. I went to the doc and told him that I was having a real bad problem of sleeping at night because I used to work nights for over 3 years, and now I work during the day. He told me the name of the active ingredient in Nyquil cold tablets. I can't remember the name of it. But it's in almost all night time cold medications in pill form. Look at the box and get the name then find an off brand like Equate (Walmart brand or Kroger brand) and buy it. Same thing but a lot cheaper. He also said that it's not addictive.