I have a cavity I need to get filled, and I'm terrified of getting it done due to reading about the potential side effects from the medication. I've only had a filling once before, and I remember also being really terrified of it, but becoming super happy during it? Not sure if that was due to the drugs or just the fact that I had realized that there was no danger. I also remember complaining about my leg twitching, but again I'm not sure what that was from or if it even happened. But after that filling I have learned about the potential side effects of the drugs given and now am absolutely terrified to have to do it again.