When you think of impaired driving, over-the-counter (OTC) medications probably aren’t the substances that come to mind. However, some common OTC drugs can really affect your ability to drive safely. Always read the label. If a drug mentions drowsiness, dizziness, or blurred vision, take it seriously…since it can result in dangerous driving and lead to a DUI.

4 over-the-counter medications that can land you a DUI:

• Anti-diarrheal medications
• Antihistamines
• Cough medicines
• Motion sickness drugs (even ones labeled “less drowsy”)

Loperamide (found in, say, Imodium) is commonly used to treat tummy troubles, but according to the Mayo Clinic, it can also cause drowsiness and dizziness. While it’s great for calming your stomach, it could make you nod off if you get behind the wheel. Pay attention to how it affects you before driving.

Many allergy medications, like diphenhydramine (found in Benadryl), can make you drowsy. Some cold medications also include antihistamines. These slow your reaction time and make you less alert behind the wheel. Check the label…if it says “may cause drowsiness,” avoid operating a vehicle after taking it.

Everyday cough suppressants often contain dextromethorphan (DXM), which can cause dizziness, confusion, and blurred vision in higher doses. Some people experience these side effects even at standard doses. Driving while feeling dizzy or having trouble seeing clearly is a recipe for a DUI.

OTC motion sickness meds, including those marketed as “less drowsy,” can absolutely cause tiredness or drowsiness. As such, make sure you’re fully alert before getting in the driver’s seat.

You can always talk to a pharmacist if you’re unsure how an OTC drug might affect your mental clarity and tactile response. Being cautious with these medications can prevent car accidents or even a DUI if a police officer determines you’re too impaired to drive.