Which of the following is true of the herbal remedy St. John's wort?
A) St. John's wort should never be taken to treat even mild depression.
B) St. John's wort is regulated by the FDA as a drug.
C) St. John's wort can produce unfavorable reactions with other medications.
D) St. John's wort is a more effective mood enhancer than SSRIs.
Answer: C
Rationale: Although the FDA does not regulate herbal remedies as drugs, the agency does warn that St. John's wort can produce unfavorable reactions with medications used to treat heart disease, seizures, and some cancers. All in all, the effectiveness of St. John's wort is still not well understood.
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