Acetaminophen, the active ingredient in Tylenol and its many competitors, is the most widely used OTC, commonly taken to relieve pain or fever. In excessive amounts, acetaminophen can cause severe liver damage.
Acetaminophen, the active ingredient in Tylenol and its many competitors, is the most widely used OTC, commonly taken to relieve pain or fever. In excessive amounts, acetaminophen can cause severe liver damage. Brendan Smialowski Getty Images
Acetaminophen, the active ingredient in Tylenol and its many competitors, is the most widely used OTC, commonly taken to relieve pain or fever. In excessive amounts, acetaminophen can cause severe liver damage. Brendan Smialowski Getty Images

Health: Over-the-counter medicines’ benefits and dangers

December 21, 2015 10:29 AM

UPDATED December 21, 2015 11:21 PM

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