Medication Caused My DUI Charge
May 2, 2025
While Most Pennsylvania drivers associate driving under the influence (DUI) charges with alcohol or illegal drug consumption, did you know that taking prescription or over-the-counter medication can lead to the same DUI charges? The law treats medication-related impairment with the same severity, sometimes with even harsher penalties, than it does with alcohol-related offenses. If this portion of the law catches you off guard and leads to a serious charge in court, let a West Chester DUI lawyer at the Law Offices of Heather J. Mattes help.
What Medications Can Lead to a DUI Charge?
Consumers have access to a wide range of medications that can result in DUI charges: Common medications that may affect your driving ability include pain medications (such as opioids like hydrocodone or oxycodone), anti-anxiety medications (including benzodiazepines like Xanax and Valium), sleep aids (like Ambien or Lunesta), antihistamines (found in allergy and cold medicines), antidepressants, muscle relaxants, anti-seizure medications, and some blood pressure medications.
Even if your doctor has legally prescribed these medications to you, if these substances impair your ability to drive safely, you could face penalties in court. Pennsylvania law does not distinguish between legal and illegal substances—rather, it focuses on the impairment and how it affects your driving ability.
How Do Pennsylvania’s DUI Laws Apply to Medication?
Per Pennsylvania’s “per se” law, officers can automatically charge you with DUI at the highest tier if you have any amount of certain controlled substances in your system that impair your ability to drive safely. For reference, this highest tier also includes charges for DUI offenders who have twice the permitted blood alcohol level.
Even for first-time offenders, the penalties for DUI include a minimum of 72 hours in jail and a maximum of 6 months, fines up to $5,000, a 12-month license suspension, mandatory alcohol highway safety school, drug and alcohol assessment and treatment, and installation of an ignition interlock device.
For repeat offenders, the court might impose longer jail sentences, higher fines, and extended license suspensions.
How Can Officers Detect Medication Impairment?
Unlike with alcohol, officers do not have access to a simple breathalyzer test for medication impairment. Instead, officers rely on field sobriety tests, empirical observation of driving behavior and physical symptoms, Drug Recognition Evaluators (DREs) who receive special training to identify drug impairment, and blood or urine tests.
If you refuse a blood test after arrest, Pennsylvania law imposes additional penalties on the DUI offender, including an automatic license suspension.
What Defenses Are Available for Medication-Related DUI Charges?
If you face DUI charges related to prescription medication, an experienced attorney might challenge whether you actually experienced impairment: Having a drug in your system does not necessarily mean that you could not drive safely. They may also question the officer’s observations and assessment methods, demonstrate that you took the medication as prescribed, challenge the validity of blood tests or testing procedures, and examine whether the officers followed proper protocols during your stop and arrest.
How Can You Avoid Medication-Related DUI Charges?
To reduce your risk of medication-related DUI charges, always read your medication’s labels and warnings carefully, and ask your doctor or pharmacist specifically about driving restrictions and potential interactions that you need to know about. Never mix medications with alcohol or other drugs, consider alternative transportation if you feel unsure about a medication’s effects, and keep documentation of your prescriptions in your vehicle.
What Should You Do If Charged with a Medication-Related DUI?
If an officer arrests you for DUI charges related to prescription or over-the-counter medication, exercise your right to remain silent until you speak with an attorney. Request to speak with an attorney immediately, and as soon as you can, document everything about the stop and arrest on a notepad or voice memo. Once you have access to them, gather records of your prescriptions and medical conditions, and avoid pleading guilty without consulting a qualified attorney who understands and can litigate medication-related DUI cases.
A West Chester DUI Lawyer at the Law Offices of Heather J. Mattes Will Help Your Case
If you need an attorney to fight prescription-related charges, trust a West Chester DUI lawyer at the Law Offices of Heather J. Mattes to build your strongest defense. Call our West Chester, Pennsylvania office at 610-431-7900 or fill out our online form for a free consultation. We serve clients in Chester County, Bucks County, Delaware County, Lehigh County, Montgomery County, and Philadelphia County.