A clinical trial involves research using human volunteers (also called participants) that is intended to add to our medical knowledge. In a clinical trial participants receive specific interventions or treatment according to the research plan or protocol. This sets out in detail the process and design of the study, the treatment(s) to be used and the measurements that will be required.
All parties (investigators, study co-ordinators and pharmaceutical company employees) involved with the development and testing of the study medicine must follow the study protocol.
The people who volunteer to be studied during these trials are advised beforehand of possible risks.