Nausea/Vomiting
"Following surgery I was administered with cyclizine IV for nausea and had an immediate adverse reaction. My whole body  was shaking my teeth were chattering uncontrollably I was losing sensation in my hands and feet and felt like I was falling into blackness. I had tightening in my chest and chest pains with an increased heart rate. And for 1 1/2 hours after it being administered I was unable to pass urine although I was absolutely desperate.  My heart rate remains higher than usual for the following 8 to 10 hours and I was unable to sleep also. I have now noted this drug with my GP and will take extra caution next time.  My nurses told me I was having a panic attack as I probably wanted to pass your in after my surgery. This was far worse"