I have COPD, which causes me to cough all night, so I cannot sleep even with the Trazodone. I looked at drug interactions of Trazodone and Tussin DM Max, which I took before I was prescribed the Trazodone, and taking the two was a high risk. I need to find a safe cough medicine so I won't be up coughing, and then do you think the Trazodone can help me sleep?