January 18, 2025 Last Updated: August 28, 2025 by Anthony Riccio
Operating under the influence (OUI) charges in Massachusetts often bring to mind alcohol-related offenses. However, prescription medications can also lead to OUI charges if they impair one’s ability to drive. That’s right, taking legally prescribed medications could result in serious legal consequences.
This blog explores the intricacies of OUI charges involving prescription drugs, Massachusetts laws governing such cases, and how a prescription drug impairment lawyer can make a difference in building a strong defense.
Operating under the influence, is the term Massachusetts uses for impaired driving. Unlike some states that use terms like DUI (Driving Under the Influence), Massachusetts law defines OUI as operating a vehicle while under the influence of alcohol, drugs, or other substances.
Many prescription drugs can impair coordination, judgment, and reaction times. These are all abilities essential for safe driving.
Medications like opioids, benzodiazepines, and muscle relaxants often come with warnings against operating heavy machinery. Ignoring these warnings could lead to serious consequences. This is true even if the drugs are legally prescribed.
Massachusetts General Laws Chapter 90, Section 24 governs impaired driving. It states that a person may be charged if they cannot safely operate a vehicle due to alcohol, drugs, or both including prescription medications.
Under Massachusetts law, a person is considered OUI if they operate a vehicle under the influence of intoxicating liquor, narcotics, or any drug, regardless of its legality.
Any drug with impairing side effects could lead to an OUI charge. However, certain medications are more commonly involved in such cases:
Many people misunderstand how the law treats prescription medications in impaired driving cases. Let’s address some common myths:
Possession of a valid prescription is not a defense to OUI charges. The prosecution must prove impairment, not just use.
Defending against prescription drug impairment charges requires addressing the specific circumstances of the case. Strategies might include:
Police often rely on Drug Recognition Experts in prescription drug cases. Their evaluations, however, can be subjective. An experienced criminal defense attorney can challenge these findings by highlighting flaws or biases in the process.
Aspect |
Alcohol-Related |
Prescription Medication |
Legal Use | Illegal under 21; limits apply | Often legal with a prescription |
Impairment Standard | BAC ≥ 0.08% | Observed impairment regardless of dosage |
Evidence in Court | BAC, sobriety tests | Drug screens, DRE testimony |
Common Misconceptions | BAC required for conviction | Prescription drugs are exempt |
Yes. Even with a valid prescription, you can face charges if the medication impairs your driving ability.
The prosecution uses sobriety tests, police observations, drug screens, and testimony from Drug Recognition Experts (DREs).
Yes. Penalties can include license suspension, fines, mandatory education programs, and possible jail time.
Not on its own. A prescription may support a defense strategy, but the state only needs to prove impairment.
A lawyer can challenge the prosecution’s evidence, question test reliability, and present alternative explanations for observed behavior.
Facing OUI charges involving prescription medications can be daunting. These cases often hinge on proving impairment, not the legality of the drug. By understanding your rights and the nuances of Massachusetts law, you can make informed decisions about your defense.
At Riccio Law, we provide thorough defense strategies and examine every detail of your case. A skilled advocate can make all the difference in protecting your rights and future.