A toxic effect of a prescribed drug results when ________
A) the drug company did not perform clinical trials for that drug
B) the physician decreased the drug dose in elderly patients
C) the blood level of a drug is below the therapeutic level
D) the blood level of a drug rises above the therapeutic level
Answer: D
A) The drug company always does clinical trials before a drug can be prescribed.
B) If the dose was decreased, there is less chance there will be a toxic effect.
C) With a blood level below therapeutic level, there is less chance there will be a toxic effect.
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