Can i give melatonin to my almost 2 year old ?

He doesnt sleep for shit early.. and i have to go to work and im always not sleeping early because of him and im so tired at work that im getting pissed off and mad. All i wanna do is sleep but my son doesnt sleep . He will be 2 in September. I just want to know if its safe people told me about kids melatonin…. But im alittle scared and iffy about it ..