New York DMV Permit Written TestAlcohol and Drug LawsEasy
A driver is taking a prescribed medication that causes drowsiness. They also consume a single alcoholic beverage before driving. Which of the following best describes the combined effect of the alcohol and medication on their driving ability?
- AThe alcohol will temporarily boost their alertness, counteracting the medication.
- BThe combined effect is likely to be significantly more impairing than either substance alone.
- CThe medication's effects will be canceled out by the alcohol, making them less drowsy.
- DAs long as the alcohol is below the legal limit, there will be no additional impairment.
Show answer & explanationAnswer & explanation
Correct answer: B. The combined effect is likely to be significantly more impairing than either substance alone.
Alcohol is a central nervous system depressant, and many medications that cause drowsiness are also depressants. When taken together, their effects can be synergistic, meaning the combined impairment is greater than the sum of their individual effects.
Why the other options are wrong
- A. Alcohol is a depressant; it does not boost alertness.
- C. Alcohol enhances, not cancels out, the effects of depressant medications.
- D. Even small amounts of alcohol can significantly increase impairment when combined with certain medications, regardless of the legal BAC limit for alcohol alone.
Alcohol-Medication Synergy
When alcohol is consumed with medications, especially those that cause drowsiness or are central nervous system depressants, their combined effect can be synergistic, leading to a much greater level of impairment than either substance alone.
- Effects are amplified, not canceled.
- Even small amounts of alcohol can be dangerous.
- Always check medication warnings and consult a doctor.
Memory trick: Mix and multiply the danger.