We tend to think of a DUI as a charge police give you for driving under the influence of alcohol–or maybe weed. But the truth is that it doesn’t matter what is “impairing” you, you can get a ticket any time you’re on a public road but unsafe to operate a motor vehicle. We’ve previously reported on both prescription and over-the-counter medications that can land you a DUI. You can probably guess you should avoid anything that makes you dizzy, causes drowsiness, or has “Don’t operate heavy machinery” on the label. But you may not know that four common household medicines you probably have in your bathroom cabinet could land you a DUI:

• Allergy medicines (antihistamines)
• Decongestants (Sudafed, etc.)
• Motion sickness meds (Dramamine, etc.)
• Antidiarrheals (Imodium, etc.)

Allergy medicines (antihistamines)

Antihistamines don’t just dry up your sinuses—they can slow your reflexes, too. Even “less drowsy” formulas can make you unsafe behind the wheel. The FDA warns that antihistamines “can slow your reaction time, make it hard to focus or think clearly, and may cause mild confusion”y many come with bright warning labels advising against driving or operating machinery.

Dr. Kimberly Zammit doubles down, explaining that older antihistamines like diphenhydramine and hydroxyzine “can also be very sedating.” If you’re feeling off, your driving might be, too.

Decongestants (Sudafed, etc.)

Many cold and flu medications contain decongestants like pseudoephedrine (Sudafed), which can leave you lightheaded and anxious—just the kind of behavior that catches a cop’s eye. According to Mintz Law Firm, “Over-the-counter decongestants can cause drowsiness, anxiety, and dizziness” . These side effects cation and could lead to a DUI arrest if you’re pulled over.

Even the Mayo Clinic warns that pseudoephedrine “may affect your ability to concentrate” . So while your sinuses might clear, legal troubles might just be your next problem.

Motion sickness meds (Dramamine, etc.)

Motion sickness medications, including dimenhydrinate (Dramamine) and meclizine (Bonine), don’t always live up to their “less drowsy” marketing claims. The Mintz Law Firm points out these meds “can cause drowsiness or dizziness that impair a driver’s skills and reflexes.” Even a small dose could leave you swerving—attracting unwanted attention from law enforcement.

Medscape warns that motion sickness drugs carry clear risks: “Because of the risk for drowsiness, patients should be cautioned against driving.” Better to let someone else steer after taking one of these.

Antidiarrheals (Imodium, etc.)

Imodium (loperamide) can calm your stomach, but it may also slow your reaction time. Drugs.com cautions that it “may also cause impairment in thinking, judgment, and motor coordination.”

The Mayo Clinic adds that dizziness and drowsiness are side effects . At highway speeds, those symptoms could leave you failing a field sobriety test.

Labels don’t lie. If your medication says “may cause drowsiness,” assume it means business. Law enforcement can—and will—arrest you for impaired driving, even if you’re taking meds exactly as prescribed. Attorney Avery Appelman warns, “Police don’t need to find drugs in your bloodstream.” They can “put you under arrest for DUI” based on your driving alone.