I have been on 20 mg of Latuda for almost a month, and I have been having increased difficulty breathing and have a horrible cough when I wake up. The difficulty breathing is getting worse. It's like I have bronchitis, but I don't. I also get very tired and hungry within an hour of taking it. I am also taking 60 mg. of Cymbalta and 40 mg. of Prozac. I have been diagnosed by at least 3 different psychiatrists as having Major Depression of Severe depression, and I don't tolerate many drugs--not just psychotropic, but across the board. I also have mitral valve prolapse, natural tremor, and debilitating back pain. Could the Latuda be causing the difficulty breathing and fast heart rate?