hiii dear if u have sleep onset insomnia than melatonon will help agomelatine is very useful for this but u have to identify other stress related psychological problem which causes sleep dist if they are than try to modify lifestyle modification is must sleep hygiene therapy will give best results like fix sleep time and do stick on it regular exercise which make u fatigue meditation no daytime sleep avoid smoking and alcohol light dinner avoid tea coffee before sleep calm and cool bed room read boring book in bed etc if melatonin will not help than try tab zolpidame 10 mg which is better than melatonin