NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Study for the NAPLEX exam with a comprehensive quiz featuring multiple-choice questions and in-depth explanations. Build your pharmacological knowledge and increase your chances of passing the pharmacist licensure examination!

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What can Bactrim do to levels of Lamivudine?

Decrease due to increased excretion
Increase due to decreased excretion
No effect
Increase due to increased absorption

The correct answer is: Increase due to decreased excretion

Bactrim can increase the levels of Lamivudine due to decreased excretion. This is because Bactrim is an antibiotic that can inhibit the activity of enzymes responsible for breaking down Lamivudine in the body and reducing its excretion. As a result, more Lamivudine can remain in the body, leading to increased levels of the drug. Option A is incorrect because Bactrim does not increase the excretion of Lamivudine. Option C is incorrect because Bactrim does have an effect on Lamivudine levels. Option D is incorrect because Bactrim does not increase the absorption of Lamivudine.