Yes. When you screen (the process of being evaluated for suitability for a study) for a study at these places, you're given a document called an "informed consent" that lists possible side effects a subject can experience from a study drug or procedures they'll need to undergo, such as blood draws, EKGs, etc.

Am I nervous about the study I'm doing? Not anymore. I didn't experience any side effects from the dose I took yesterday, which was the first dose of this study (four more to go; dosings are every Friday for this study). Procedure wise, this is a very easy study.

This is what most of my week is going to look like till I get out of here: