Suggest Medication To Induce Good Sleep

Hello sir,from last 3 years i was worked in a call center at night shift now i left that job and i join other company,now they give me a day shift but the problem is i am not going to sleep at night sleeps comes me at day time only so i want to know about the best sleeping pill which make me at night sleep of 7 to 8 hours and i want a powerfull pill even somebody shake me also i wont wake