"i have taken 50mg of trazodone on two non consecutive nights and have had very severe side effects. both nights, i recall having an extremely high heart rate, a massive headache caused by sinus pressure, it caused extreme post nasal drip, and i had trouble swallowing because of the dry mouth. by 430 am on the second night that i tried taking trazodone  i took an atavan because i was panicking because i could not sleep. afterwards i felt incredibly dizzy, because the two medications don&#039;t mix well together. tonight i decided i would skip the medication and see if i could sleep without it. it is 1247 am and i&#039;m still awake. i spent a night last week in a sleep disorder lap, but i was unable to sleep there either."