Trazadone not only caused me to stay awake, but I had a weird experience on it. I took the prescribed dose, but instead of falling asleep I experienced flashing colored lights when I closed my eyes and felt like I was passing out. It felt like and overdose. I forced myself to sit up and say my name aloud, over and over, drink water...finally the episode passed. Freaky, and I won't take Trazadone again.