Scopolamine
"Had surgery and they had me put this on to minimize secretions and for nausea. It worked amazing while it was on as I was taking pain meds and went under general anesthesia. I was suffering from very bad vision though and it was quite alarming how I couldn't even read simple things. The day I took it off I threw up multiple times and had EXTREME nausea and dizziness. For two days straight I slept all day and night because it was too miserable to be awake. It took a good three or more days for me to not feel nauseous anymore. My mom also experienced a similar rebound effect. It works good for while you're on it but be careful because some people get these adverse effects like me!"