insomnia
"I guess I'm in the group of people that had severe reaction to this medication. The doctor prescribed 100mg trazodone for my "eyes wide open in bed throughout the night" problem. I took caution for the first night and took half a pill or 50mg but after about half an hour my heart stared beating really fast and arrhythmic, my ears and forehead become really hot, etc. it took an hour, two glasses of cold water and trying to breath normally for it to pass. A horrible experience which I won't forget. Next day I went to my doc and yelled angrily that if I had taken full dose it could have killed me and his reaction was something like oops! seems like this med is not for you! 

Short version : my advice is to take a small dose at first ,if ok then increase "