Why do I puke a lot when I'm off my meds?

This is an odd question, I know, but I'm curious if anyone else had experienced this. I've been on my medication for a long time now, and remember back when I'd go into full panic mode when I wasn't. There was one night in particular where I was freaking out like I normally would do. Likely because I thought I was doing something to betray the universe, or thought my ex could read my thoughts, or any stuff of that nature. In the midst of this, I would projectile vomit everywhere. I don't really understand why. Google made it seem like it wasn't too common. Has anyone else had similar symptoms?