An over-the-counter drug ingredient not generally recognized as safe or effective for the claimed therapeutic indication is classified as _________.

• A. Category I
• B. Category II
• C. Category III
• D. Category IV

Answer: (B)

The main idea being tested is how OTC drug ingredients are categorized based on safety and efficacy for their labeled use. Category II represents ingredients that have not been shown to be safe or effective for the claimed indication. When an ingredient lacks adequate proof of safety or efficacy for the use it’s advertised for, regulators classify it as not safe or not effective, placing it in Category II. This is why the correct choice corresponds to that category.

For contrast, Category I would mean the ingredient is safe and effective for the indicated use, and Category III indicates insufficient data to determine safety or efficacy. (Some frameworks also include Category IV for not generally recognized as safe and effective, but the stem’s wording aligns with Category II.)