A nurse is teaching a client who has a new prescription for erythromycin. Which of the following information should the nurse include?

A. Take this medication with a glass of grapefruit juice: Grapefruit juice can interfere with the metabolism of many medications, including erythromycin, potentially increasing the drug’s effects and side effects. Therefore, it should be avoided while taking erythromycin. B. Expect your skin to turn yellow: Jaundice (yellowing of the skin) is not a normal or expected side effect of erythromycin. It can indicate liver dysfunction or a serious side effect, which requires immediate medical attention. C. Increase fiber intake to prevent constipation: Erythromycin does not cause constipation. It may cause gastrointestinal side effects such as diarrhea. Fiber may be beneficial for other conditions, but it is not specifically for erythromycin use. D. Monitor for ringing in your ears: Erythromycin can cause ototoxicity, which may result in ringing in the ears (tinnitus) or hearing loss. The nurse should instruct the client to report any such symptoms immediately.