What is the hangover phenomenon?Originally, after many losing sleep patients take medicine, can go to sleep peacefully, but after waking, actually murky, dizzies, is unable to focus the attention.

• 一个患者如果服用安定后做噩梦，换用其他的同类安眠药，比如换用舒乐安定等，可能噩梦现象就会有所缓解。