A nurse is assisting with the preparation of an educational program about the use of oral contraceptives. The nurse should include that which of the following herbal supplements reduces the effectiveness of oral contraceptives?
Ginger root
St. John's wort
Gingko biloba
Glucosamine
The Correct Answer is B
A. Ginger root is not known to reduce the effectiveness of oral contraceptives significantly.
B. St. John's wort is an herbal supplement that can induce the cytochrome P450 enzyme system, leading to increased metabolism of oral contraceptives and potentially reducing their effectiveness. Women taking oral contraceptives should be cautioned against using St. John's wort or advised to use alternative contraceptive methods.
C. Gingko biloba is not known to reduce the effectiveness of oral contraceptives significantly.
D. Glucosamine is not known to reduce the effectiveness of oral contraceptives significantly.
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Related Questions
Correct Answer is D
Explanation
A. Prone position (lying face down) is not appropriate for administering vaginal cream.
B. Orthopneic position (sitting up and leaning slightly forward) is not conducive to administering vaginal cream.
C. Sims' position (lying on the left side with the right knee drawn up and the left arm drawn behind, often used for rectal examinations) is not typically used for administering vaginal cream.
D. The dorsal recumbent position, lying on the back with knees flexed and soles of feet flat on the bed, is typically recommended for administering vaginal cream. This position allows for easier insertion and retention of the medication.
Correct Answer is B
Explanation
A. Ginger root is not known to reduce the effectiveness of oral contraceptives significantly.
B. St. John's wort is an herbal supplement that can induce the cytochrome P450 enzyme system, leading to increased metabolism of oral contraceptives and potentially reducing their effectiveness. Women taking oral contraceptives should be cautioned against using St. John's wort or advised to use alternative contraceptive methods.
C. Gingko biloba is not known to reduce the effectiveness of oral contraceptives significantly.
D. Glucosamine is not known to reduce the effectiveness of oral contraceptives significantly.
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