Which law requires drug manufacturers to provide detailed labeling?

The Federal Food, Drug, and Cosmetic Act is the law that mandates drug manufacturers to provide detailed labeling for their products. This act was established to ensure that all food, drugs, and cosmetics are safe, sanitary, and labeled according to specific regulations. The detailed labeling includes essential information such as active ingredients, indications, usage instructions, potential side effects, contraindications, and other pertinent information that helps ensure safe and effective use of the drug. This requirement is crucial for consumer safety and helps healthcare providers make informed decisions when prescribing or dispensing medications.

The other laws mentioned serve different purposes; for instance, the Controlled Substances Act regulates the manufacture and distribution of controlled substances, while the Drug Price Competition Act focuses on the process for generic drug approval. The Occupational Safety and Health Act is designed to ensure safe working conditions, which does not pertain to drug labeling. Therefore, the Federal Food, Drug, and Cosmetic Act is clearly the correct answer because it specifically addresses the requirement for detailed labeling of drugs.