Name that drug: Many patients can't

By Julie Steenhuysen

CHICAGO (Reuters) - Most doctors rely on patients to give them an accurate account of what drugs they are taking, but a new U.S. study published on Thursday suggests many patients get it wrong.

About 40 percent of 119 patients taking blood pressure medication in three community health centers could not accurately recall what drugs they were taking.

That number jumped to 60 percent for those with low health literacy, a measure of their ability to read and comprehend health-related materials, researchers at Northwestern University's Feinberg School of Medicine in Chicago found.

This could lead to drug interactions and the undertreatment of chronic diseases, said Dr. Stephen Persell, whose study will appear in the November issue of the Journal of General Internal Medicine.

"I don't think we have a good grasp on how important this problem is in terms of the medical outcomes," he said in a telephone interview.

Persell said the problem was worse than expected and poses challenges for doctors who are trying to understand why a patient's health is not improving with treatment.

"Does it mean the patients are not responding well to the medication or are they not using the medication?" he said.

Persell and colleagues studied 119 patients with high blood pressure and an average age of 55 at three community health centers in Grand Rapids, Michigan.