A nurse is taking a medication history from a client who has a new prescription for levothyroxine. The nurse should instruct the client to wait 4 hr after taking levothyroxine before taking which of the following supplements?
Ginkgo biloba
Calcium
Vitamin C
Zinc
The Correct Answer is B
Calcium can interfere with the absorption of levothyroxine when taken concurrently, potentially reducing its effectiveness. Therefore, it is recommended to separate the administration of these two medications by at least 4 hours to avoid this interaction.
A,C,D-No effect on absorption of levothyroxine
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rifampin, an antibiotic used to treat bacterial infections, can cause a reddish-orange discoloration of body fluids, including urine. This color change is due to the presence of rifampin metabolites, which are eliminated through the urine. The discoloration is a harmless side effect and is considered normal while taking the medication. It causes decreased effectiveness of oral contraceptives
A- Rifampin is an enzyme inducer that increases the rate of metabolism of oral contraceptive pills.
This leads to subtherapeutic levels that increases the risk of pregnancy.
B- The prescription may vary
C- Rifampin causes staining of contact lens and should, therefore, be avoided
Correct Answer is D
Explanation
Returning the mediation to the pharmacy allows for safe disposal A,B,C- Could lead to environmental contamination with potential hazards
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