(CNN) - The Food and Drug Administration said prescription drugs with more than 325 milligrams of acetaminophen could cause liver damage.
The agency also said there's nothing that indicates that the benefit of taking more than 325 milligrams outweighing the risks for liver injury.
Acetaminophen is often used in combination with pain killers, like oxycodone, hydrocodone and codeine.
The warning does not apply to over-the-counter drugs such as Tylenol.
Tylenol contains acetaminophen, but the FDA said it plans on addressing over-the-counter acetaminophen products in another regulatory action.
Copyright 2014 CNN. All rights reserved.
WSLS 10, P.O. Box 10Roanoke, VA 24022-0010