An evolutionary approach to personal finance, investing and saving money. Well I participated in one because I really needed the money at the time. I had no side effects whatsoever, except some light nauseas, which might have been due to the required fasting, not the actual medication. Depending on where you are located, you can start with the following companies that really pay. The websites listed below can be used to find list of available clinical trials where you can get paid today as a test subject or human guinea pig:. Rachel Cohen 8 months ago. How to become a grant writer.