Before the GCP and similar regulations came into force, clinical trials were largely based on the needs of national governments rather than human rights. The GCP regulates human experimentation in the interest of advancing medical science. It acts as a quality benchmark as well as a moderator that keeps such experiments in check.
According to the GCP, research can only be conducted on a human subject if the expected benefits outweigh the potential risks. The needs and safety of the individual always take precedence over scientific objectives, and the individual must be aware of all tests that will be administered to him. Failure to do so is considered a serious violation of GCP guidelines