Sleeping tablets are beneficial for those who are experiencing troublesome and horrifying sleepless nights, followed by drowsiness and dizziness the next day. One can take a tablet about thirty minutes before bedtime. These sedatives cannot be combined with alcohol, caffeine, nicotine and other such types of substances, as they may affect you of a sound sleep. To ensure sleep medicines work well for insomnia cures, it is essential to take tablets, as and when suggested by a doctor.