Fifteen percent of men and women ages 62 to 85 in the U.S. are potentially at risk for a dangerous interaction between a prescription drug, over the counter drug (OTC), and/or supplement they are taking, according to a study published in 2016 (Qato, JAMA Intern Med 2016
The most common drug and supplement combinations with the potential for harmful effects, according to that study, are warfarin (Coumadin) interacting with fish oil
; the ACE inhibitor drug lisinopril (Zestril) interacting with potassium
; and statin drugs like atorvastatin (Lipitor) and rosuvastatin (Crestor) interacting with niacin
For more about these drug interactions, use the links above. You may also check for others in the extensive Drug Interactions
section in the Encyclopedia.