Allergy Meds Can Pose Driving Hazard, FDA Says

sneeze, allergies, bless you
It is believed that blessing sneezes began as a way to protect the soul while being ejected during the event. (Image credit: Michael Krause | Dreamstime)

Allergy medications may help you get through the spring and summer months, but it's important to know that the drugs could affect your ability to drive, the Food and Drug Administration is reminding consumers today (May 29).

These medications, which contain antihistamines, can sometimes cause drowsiness and slower reaction times, the FDA said. Consumers should read the drug facts label on their medication to see whether drowsiness is a side effect.

If an allergy medication causes drowsiness, people need to be cautious about deciding to drive or operate machinery, the FDA says. People should avoid using alcohol, sedatives (sleep medications) and tranquilizers when taking allergy medication because these substances may increase drowsiness. [See Will Allergies Be Worse in 2013?]

Those who switch to a new antihistamine drug should not assume they can take the same dose as they did with the older drug, the FDA says. Different allergy medications may be dosed differently, and people may need to alter the dose they take.

People should not take more than the recommended dose.

“If the correct dosage isn’t providing you the relief you expect, don’t simply keep taking more and more of that product,” FDA pharmacist Ayana Rowley said in a statement. Instead, people should consult a health care professional, Rowley said.

Allergy sufferers should be aware that some allergy medications take longer to work than others. In addition, the drowsiness you feel after taking the medication may last some time, including into the next day, the FDA said.

Follow Rachael Rettner @RachaelRettner. Follow MyHealthNewsDaily @MyHealth_MHND, Facebook & Google+. Originally published on Live Science.

Rachael Rettner

Rachael is a Live Science contributor, and was a former channel editor and senior writer for Live Science between 2010 and 2022. She has a master's degree in journalism from New York University's Science, Health and Environmental Reporting Program. She also holds a B.S. in molecular biology and an M.S. in biology from the University of California, San Diego. Her work has appeared in Scienceline, The Washington Post and Scientific American.