cough
"One of the most horrible drugs I've taken in my life. Mind you it was very effective at suppressing the cough, but it gave me vertigo like no tomorrow. I had HUUUUGE dilated pupils, severe dizziness, vertigo (cannot walk unassisted), confusion and retrograde amnesia. I had to take one day off work  plus the whole weekend to lay in bed trying to fight the dizziness. It is now the 4th day since I took the drug (extended release pill x 3 doses) and I'm still fighting the side effects. It has severely impaired my ability to concentrate at work and I do not recommend this for ANYBODY."