Did you know antihistamines can impair your driving more than alcohol? According to a study done at the University of Iowa, some medicines (such as those containing diphenhydramine) can make you drowsy, unfocused, affect your decision making abilities, and slow down your reaction times while driving.

Always read medicine labels carefully and follow all the precautions suggested. If it advises against driving, don’t!
NOTE: In most states, allergy medicines are considered drugs and you can be arrested for DUI if you are involved in an accident with them in your bloodstream.