Which of the following client comments indicate an understanding of drug/herbal interactions with warfarin therapy?
a. "I can still use my black cohosh for my menopause symptoms."
b. "I should avoid taking B-complex vitamins."
c. "I should discuss my thyroid medications with my doctor."
d. "I can still use garlic to flavor my foods and decrease my cholesterol."
ANS: A, C
Feedback
Correct a. and c. are correct. Black cohosh does not alter the effects of warfarin; however, thyroid hormones can increase the effects of warfarin.
Incorrect B-complex vitamins do not alter warfarin effects, but garlic can increase the effects of warfarin.
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