My experience with Melatonin was very hit-or-miss. Sometimes it landed like a hammer and I was very groggy the next day. Sometimes it seemed not to work at all. This was with all sorts of doses.
I've found Tart Cherry - as an OTC supplement to work much better. More pleasant drift off to sleep, less waking up at night, and no morning grogginess.
The body gets used to melatonin. It is actually a crap sleep supplement. It works worse every time you take it. What you should be doing is give the body the ingredients it needs to make its own melatonin like it is suppose to work.
I've found Tart Cherry - as an OTC supplement to work much better. More pleasant drift off to sleep, less waking up at night, and no morning grogginess.