Melatonin
"So I've been ill for 16 yrs, autoimmune, so needless to say insomnia is part of the equation here, since I don't absorb anything properly I take is liquid or sublingual. I take 3mg sublingual dots they work like a charm, if it's a bad night I take 2. But that's just me. Also the blue light on your cell and Desktop computer lowers your Melatonin and causes you to lose sleep. Look for an app to filter that out that should help tremendously... sweet dreams"