A nurse is consulting a pharmacological reference about medication compatibility prior to administering warfarin to a client. Which of the following medications should the nurse identify as being incompatible with warfarin?

A. Lisinopril: Incorrect. Lisinopril, an ACE inhibitor, does not have a significant interaction with warfarin. B. Magnesium hydroxide: Incorrect. While magnesium hydroxide can affect absorption of some drugs, it does not directly interact with warfarin in a significant manner. C. Propranolol: Incorrect. Propranolol, a beta-blocker, does not have a significant interaction with warfarin. D. Naproxen: Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that increases the risk of bleeding when taken with warfarin due to its antiplatelet effects.