Buspirone
"Have had some anxiety for the second time in my life. The first time I did well with Xanax as needed and also Ambien as needed. I got through the rough patch and didn't need anything anymore for almost 2 years now. Right now it's been slowly coming back due to some stress back in my life. So I went and they gave me Ambien, which I do well with and Buspirone. I took it (only 5mg) today at 2pm. 30 mins later I started feeling very off, like my anxiety was getting worse every minute. My heart started racing, I was sweating all the sudden and when I tried to sit down and drink some water, my hands were so shaky that I could barely drink it without spilling. I was TERRIFIED!!! 

Went to the ER and my heart rate 204. Never take this horrific med!!"