I've been on 150 mg Trazadone for 27 years now, and it works very well for me. If I don't take it I wake up around 2 to 3 and every hour on the hour until I get up. I'm pretty sure you have to take it at a regular time each night. I take mine anywhere between 10 to 12 at night, it just depends on how late I want to stay awake. If your groggy in the morning start at the lowest dose, and break it in half and start with that. You can inch up from their as your body is acclimated to it.