Anabel takes a box of over-the-counter cold medication to Jamal, the pharmacy technician. She wants to know how to take the medication and whether it will interact with other medications she is using. Which best describes which sources Jamal would reference?

The Drug Facts label on an over-the-counter medicine explains how to use it, including directions and warnings. To check possible interactions with Anabel’s other medications, Jamal could consult the Merck Manual, which provides medical and drug information. The Orange Book focuses on FDA-approved drug products and therapeutic equivalence, not drug-interaction checking.

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