In the US, regulation of drugs was originally a state right, as opposed to federal. With increase in fraudulent practices due to private incentives to maximize profits (elites) and poor enforcement of state laws (elites) or more likely illuminati offering solutions to manufactured problems, the "need" for stronger federal regulation increased. In 1906 President Roosevelt signed the Federal Food and Drug Act (FFDA) which established stricter standards for drug manufacture and sales. It established the Federal government as the regulating authority over the US drug industry whose spokes person is the CDC.
A 1911 Supreme Court decision, United States vs. Johnson, established that misleading statements were not covered under the FFDA.🧐🧐🧐

More catalysts for advances in drug regulation in the US were certain catastrophes that served (the problem for a solution) as calls to the US government to step in and impose regulations that would prevent repeats of those instances. Hocus Pocus.