Antidepressants, benzodiazepines may increase risk of falls in elderly

Researchers at the University of North Carolina at Chapel Hill have created a list of prescription drugs that increase the risk of falling for patients aged 65 and older who take four or more medications on a regular basis.

"Falls are the leading cause of both fatal and non-fatal injuries for adults 65 and older, and research suggests that those taking four or more medications are at an even greater risk than those who don't - perhaps two to three times greater," said Susan Blalock, PhD, an associate professor at the UNC Eshelman School of Pharmacy.

Blalock is the principal investigator of an ongoing study of a falls-prevention program she and fellow researchers developed for pharmacists to implement. Both the list of prescription drugs and some of the study's finding were published in the June issue of the American Journal of Geriatric Pharmacotherapy.

"What we've done as part of our study is to identify specific prescription drugs that are most likely to contribute to the falls," she said. The medications on the list cover a wide range of common prescription antidepressants, seizure medications, painkillers and more. The common denominator among them is that they all work to depress the central nervous system, which can make patients less alert and slower to react.

Stefanie Ferreri, Pharm.D., lead author of the paper and a clinical assistant professor in the pharmacy school, warns that patients need to be wary of more than just prescription medications, as many over-the-counter medications can also contribute to falls.

"Some allergy medications, sleep aids and some cold and cough remedies can have the same effects as prescription drugs," Ferreri said. "Always let your doctor know what over-the-counter medications you are taking and be sure to read the labels. Anything that can cause drowsiness can put you at increased risk of falling."

The researchers caution that if patients see a drug they are taking on the list, they should not stop taking it. Next time they see their doctor, talk about the risk of falling and possible alternative medications.

Full drugs list... ()

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Ferreri S, Roth MT, Casteel C, et al. Methodology of an Ongoing, Randomized Controlled Trial to Prevent Falls Through Enhanced Pharmaceutical Care. Am J Geriatr Pharmacother. 2008 Jun;6(2):61-81   [Full text (]