A 29-year-old man has been diagnosed by the PMHNP with depression, and they have mutually agreed on a trial of an SSRI. The client asks the PMHNP, "Should I stop taking my St. John's Wort?" What is the most appropriate response?

Choice A reason: This response incorrectly implies that lack of efficacy from St. John's Wort precludes SSRI use. The concern is not efficacy overlap but the risk of serotonin syndrome due to additive serotonergic effects. Choice B reason: This is incorrect and dangerous. St. John's Wort and SSRIs both increase serotonin levels, and their combination can lead to serotonin syndrome. They do not complement each other and should not be used together. Choice C reason: This is the correct response. St. John's Wort has serotonergic properties and can interact with SSRIs, increasing the risk of serotonin syndrome. The combination is contraindicated due to the potential for life-threatening adverse effects. Choice D reason: This response delays appropriate treatment and overlooks the safety concern. Continuing St. John's Wort while initiating an SSRI is unsafe and not recommended.