A client has a medical prescription for nifedipine [Adalat XL]. Which of the following should the nurse teach the client about this medication?

A. Nifedipine [Adalat XL] is a long-acting calcium channel blocker, and it should be swallowed whole to maintain its extended-release properties and ensure proper absorption. B. Blood pressure should be monitored regularly, but taking it in the morning is not specifically related to nifedipine's use. C. While caution with OTC medications is generally good advice, it is not specific to nifedipine. D. The timing of the medication (morning vs. bedtime) is not typically specified unless otherwise directed by the healthcare provider.