Pure Food and Drug Act
The 1906 Act paved the way for the eventual creation of the Food and Drug Administration (FDA) and is generally considered to be that agency's founding date, though the agency existed before the law was passed and was not named FDA until later. "While the Food and Drug act remains a foundational law of the FDA mission, it's not the law that created the FDA. [Initially,] the Bureau of Chemistry (the precursor to the FDA) regulated food safety. In 1927, the Bureau was reorganized into the Food, Drug, and Insecticide Administration and the Bureau of Chemistry and Soils. The FDIA was renamed the FDA in 1930."
Kefauver Harris Amendment
The Kefauver Harris Amendment strengthened the U.S. Food and Drug Administration's control of experimentation on humans and changed the way new drugs are approved and regulated. Before the Thalidomide scandal in Europe, and Canada, U.S. drug companies only had to show their new products were safe. After the passage of the Amendment, an FDA New Drug Application (NDA) would have to show that a new drug was both safe and effective (previously the 1938 Food, Drug and Cosmetic Act was the main law that regulated drug safety). Informed consent was required of patients participating in clinical trials, and adverse drug reactions were required to be reported to the FDA.