What does not apply to USP Chapters 1000 to 1999?

The correct assertion is that USP Chapters 1000 to 1999 are not enforceable. These chapters establish guidelines and recommendations rather than legally binding regulations. While they provide valuable insights into best practices, including compounding standards and pharmaceutical descriptions, they do not hold the same weight as enforceable regulations found in other sections of the United States Pharmacopeia (USP).

The chapters in this range offer important informational resources and best practice recommendations pertinent to the pharmaceutical industry. Practitioners are encouraged to follow these guidelines to promote safety and quality, but they should understand that adherence is not legally mandated, which is crucial for maintaining appropriate compliance in practice.