Shelby wants to buy pain-relief medication. At the store, she selects a brand called Motrin™ and a brand called Advil™. She is supposed to see that each medication’s packages list the drug ibuprofen as the active ingredient.

Ibuprofen is the generic name for the active drug found in both Motrin and Advil. Motrin and Advil are trade names used by different brands to sell medicines containing ibuprofen.

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