A nurse is teaching a client who plans to take St. John's wort to treat her depression. Which of the following information should the nurse include in the teaching?

A. "St. John's wort may increase your risk of developing oxalate kidney stones." There is no strong evidence to support that St. John's wort increases the risk of kidney stones. This is not a known or common side effect of the herb, making this statement incorrect. B. "You may experience vivid dreams while taking St. John's wort." While vivid dreams are not a common side effect of St. John's wort, there is no significant evidence supporting this as a typical reaction. The herb is more commonly associated with other side effects, such as gastrointestinal discomfort, photosensitivity, or potential interactions with medications. C. "You should avoid driving when taking St. John's wort because it can cause drowsiness." Drowsiness is not a typical side effect of St. John's wort. In fact, St. John's wort is often used for its potential antidepressant effects, which may actually improve mood and energy levels. Therefore, advising avoidance of driving due to drowsiness is not accurate for this herb. D. "St. John's wort may cause gastrointestinal irritation."St. John's wort can cause gastrointestinal issues such as nausea, upset stomach, or other forms of GI irritation, especially when taken in higher doses. This is one of the common side effects, so it’s important for clients to be aware of it.