The use of codeine is problematic because:
A) it is metabolized into heroin.
B) 20% of Americans have a genetic variation that causes codeine to be metabolized very slowly.
C) 10% of Americans possess a genetic variation causing codeine to be rapidly metabolized.
D) 5% of Americans are unable to metabolize the drug resulting in toxic effects.

Question

Quizplus · Accepted Answer

Codeine is metabolized into morphine, not heroin. Approximately 10% of Americans have a genetic variation that causes them to metabolize codeine rapidly, leading to higher levels of morphine and potential toxicity.

The Use of Codeine Is Problematic Because