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FDA proposes sterner warnings for acetaminophen, aspirin, other pain relievers

WASHINGTON — Federal health officials cautioned Tuesday the tens of millions of Americans who take popular over-the-counter pain pills of their potentially serious side effects and released planned label changes intended to warn of the sometimes deadly risks.
    Aspirin, ibuprofen, acetaminophen and the other related over-the-counter drugs remain safe and effective when used as directed, the Food and Drug Administration said.
    However, overdoses of acetaminophen can cause serious liver damage, even death, the FDA said. For aspirin, ibuprofen and other nonsteroidal anti-inflammatory drugs, there is a risk of gastrointestinal bleeding and kidney injury even when patients take the correct dose. Those risks too are linked to deaths, in this case thousands each year. The FDA cautioned the risk is rare when compared to the number of patients who take the drugs.
    Experts called the stepped-up warnings long overdue, since federal advisers had called for similar label changes in 2002. An FDA official chalked it up to the time required to write new regulations.
    ‘‘Unfortunately, that is a very long process. That is one of the disadvantages of the rule-making process,’’ said Dr. Charles Ganley, director of the FDA office that oversees nonprescription products.
    The drugs are found in hundreds of medicines sold to treat pain, headache and fever. Health officials worry that the wide availability of those combination products can lead to patients unintentionally overdosing. Doctors report cases of patients taking two or more medicines — say, one for pain and another for flu symptoms — without knowing they both contain acetaminophen.
    The FDA has updated the labels on the drugs multiple times in the past to warn patients of their risks. In 2002, FDA advisers recommended even further changes. In 2004, some of the warnings contained in the new proposal were included in pharmacy brochures and public service ads — a move that some critics said at the time didn’t go far enough.
    The latest proposed changes largely would beef up and highlight those warnings on the labels of the drugs. They also would require the more prominent disclosure, using fluorescent or bold-faced type, the presence of the drugs among a medication’s ingredients.
    ‘‘It’s a step that’s overdue and really reflects the consensus that came out of the meeting four years ago, which is helping the consumer know what they are taking,’’ said Dr. Paul Watkins, a professor of medicine at The University of North Carolina at Chapel Hill and a member of the 2002 advisory panel.
    For acetaminophen, the labels also would warn of the risk of severe liver damage if patients take more than the recommended dose or consume three or more alcoholic drinks a day while on the drugs. The labels also would warn patients not to take multiple medicines that contain acetaminophen. In any given week, an estimated 48 million Americans take an acetaminophen product.
    For aspirin, ibuprofen, naproxen and other nonsteroidal anti-inflammatory drugs, or NSAIDs, their labels would have to contain additional warnings of the risk of stomach bleeding. The labels would note the risk is higher in patients older than 59, or in those who have stomach ulcers, take blood-thinning drugs or steroids, use other drugs that contain an NSAID or remain on the medications for an extended period. An estimated 17 million Americans take an NSAID daily.
    ‘‘Over-the-counter medicines are real medicines with real risks if misused. As with all medicines, there can be risks associated with not following label directions,’’ said Elizabeth Assey, a spokeswoman for the Consumer Healthcare Products Association, which represents nonprescription drug manufacturers.
    Acetaminophen is sold under the brand name Tylenol and in multiple generic versions. Acetaminophen sends an estimated 56,000 people to the emergency room each year, the FDA said. About 100 people die each year after unintentionally overdosing on the drug.
    Ibuprofen is sold under the brand names Advil and Motrin and in generic form as well. Naproxen is best known as Aleve, but is also sold generically. The NSAIDs are blamed for sending more than 200,000 Americans to the hospital every year, and are linked to an estimated 16,000 deaths, the FDA said. The agency said it would address the cardiovascular risks of nonprescription NSAIDs in the future.
    While all the affected drugs are available without a prescription, they also are used in multiple combination products sold only with a doctor’s note. Those include narcotics, which can be addictive.
    Experts have proposed ‘‘unbundling’’ acetaminophen from those products, said Dr. William Lee, of the University of Texas Southwestern Medical Center. They’ve also suggested limiting acetaminophen package sizes, something already done in the United Kingdom, he said. The FDA is looking at both issues, the agency’s Ganley said.
    The proposal appeared Tuesday on the FDA’s Web site ahead of its expected Dec. 26 publication in the Federal Register. Since it could take a year or more for the rule to become final, the FDA said it strongly encouraged companies to update their labels in the meantime, as some companies already have done.
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    On the Net:
    Food and Drug Administration: http://www.fda.gov/

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