Interactions and contraindications

Interactions and contraindications ( 5 Questions)

A nurse is administering tetracycline to a client who has acne vulgaris. The client tells the nurse that he usually takes calcium supplements with his meals.
How should the nurse respond?



Correct Answer: D

You should take calcium supplements at least 2 hours before or after tetracycline. This is because calcium can interfere with the absorption of tetracycline and reduce its effectiveness.

Choice A is wrong because taking calcium supplements with food does not prevent the interaction with tetracycline.

Choice B is wrong because avoiding calcium supplements altogether is not necessary and may deprive the client of an important nutrient.

Choice C is wrong because drinking plenty of water does not prevent the interaction with tetracycline either.

Normal ranges for calcium are 8.5 to 10.2 mg/dL for adults. Tetracycline is an antibiotic that is used to treat acne vulgaris and other infections. It should be taken on an empty stomach with a full glass of water.




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