The biggest concern: Taking too much of the popular drug acetaminophen can poison the liver.

Duh!

It's not the only over-the-counter drug getting attention: The FDA's campaign also will warn that certain patients are at increased risk of other side effects from different painkillers -- such as aspirin, ibuprofen, naproxen or ketoprofen -- called NSAIDs, or nonsteroidal anti-inflammatory drugs. Those side effects include stomach bleeding and kidney problems.

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