The act that provides guidelines for the use of controlled substances is known as?

The correct answer is the Controlled Substances Act, which is a crucial piece of legislation in the United States that regulates the manufacture, distribution, and use of controlled substances. This act classifies drugs into different schedules based on their potential for abuse, therapeutic use, and safety profiles. Schedule I substances, for instance, are considered to have a high potential for abuse and no accepted medical use, while Substances in Schedule II through V have recognized medical uses but varying degrees of abuse potential.

The Controlled Substances Act ensures that there is a legal framework guiding who can prescribe and dispense these medications, as well as establishing penalties for violations. It plays a significant role in public health and safety by preventing misuse and ensuring that these substances are used appropriately and judiciously.

The other options do not pertain to the specific regulation of controlled substances in the same context. For instance, while the Drug Regulation Act and the National Health Act may deal with health and medication in broader terms, they do not specifically focus on the regulation of controlled substances. The Safety and Health Act is more concerned with occupational health and safety regulations rather than the management of drug substances.