Melatonin is natural, unlike Benadryl, Nyquil or most sleeping medications you find in the drug store. It is a natural part of your brain chemistry. Your body is supposed to naturally produce more of it at night time to help you sleep, but sometimes just a little extra is all it takes. Most often it comes in a 3mg pill but you can get it in a 1mg pill too (you will probably have to look for this dose at a drug store as opposed to a grocery store or Walmart), which for most people is plenty.