The nurse is concerned when the prothrombin time (PT) for a client receiving warfarin (Coumadin) is fluctuating beyond normal range. The nurse suspects which supplement to be the cause of this elevation?
A) Garlic
B) Saw palmetto
C) Vitamin C
D) Ginseng
A
Feedback:
Combining garlic with other anticoagulants can prolong bleeding. Saw palmetto is used to treat enlarged prostate and has no effects on bleeding. Vitamin C is a water-soluble vitamin and can cause calculi formation. Ginseng is used to increase energy and can result in elevation of blood pressure.
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