David: I've been taking Remeron for about 8 months. Now, I'm sleeping through the night, where before Remeron one-two hours if lucky......sometimes several days without sleep. My tremors have improved as well.....90 % is probably right for me also. I'm not sure that Remeron causes "sleeping during the day" , in particular if you take it around 10 or 11 PM....any later and some folks might have problems......I have found with all the meds for PD which I am currently taking and/or have taken, cause an increase in drowsiness during the day for a while... Give it a little more time and hopefully your body will adjust to the Remeron....Also, are you taking 15mg. or 30mg.??? I ask because my neuro told me Remeron is a drug which at the lower dosage actually causes one to sleep more.....Docs instructions for me were 15mg. before bedtime for the first week and afterwards 30 mg......Good luck! Sharon Parker 45\43