Alcohol and drugs
Your doctor has prescribed a medicine that makes you drowsy. How does California's DUI law treat it?
- The same as an illegal drug, if it affects your ability to drive safely. Correct answer
- As exempt, because a doctor prescribed it.
- As a drug only if you take more than the dose you were prescribed.
Why
The handbook removes the distinction most people lean on: in the eyes of the law a pill from the pharmacy counts the same as something bought on the street. What counts is the effect. Driving impaired is illegal whether what impairs you is alcohol or a drug, and the handbook counts prescriptions and over-the-counter medicines in that second group, along with any mix of the two that leaves you less able to drive safely. So a prescription in your pocket is not a defense, and neither is taking exactly the dose you were told to take. The duty it puts on you is to check the label and understand what the drug will do to you before you drive. It even names cough syrup among the things that carry alcohol.
Where this comes from
California Driver's Handbook, DL 600 ENGLISH (REV. 6/2025). The correct answer is The same as an illegal drug, if it affects your ability to drive safely..
- Section 9. Alcohol and Drugs , page 72
- Section 9. Alcohol and Drugs , page 72
- Section 9. Alcohol and Drugs , page 72