A patient who is receiving anticoagulant therapy is also being started on estrogen therapy. Which action may the health care provider need to take because of the interaction of these drugs?
a. Increase the dose of the anticoagulant.
b. Decrease the dose of the anticoagulant.
c. Increase the dose of estrogen.
d. Add ascorbic acid to the therapy.
ANS: A
The action of clotting factors is increased by estrogen, thus diminishing the effects of oral anti-coagulants. Thus the anticoagulant dose may have to be increased.
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