Acetaminophen 650 mg
Acetaminophen belongs to a class of drugs called analgesics (pain relievers) and antipyretics (fever reducers). The exact mechanism of action of acetaminophen is not known. Acetaminophen relieves pain by elevating the pain threshold, that is, by requiring a greater amount of pain to develop before it is felt by a person. It reduces fever through its action on the heat-regulating center of the brain. Specifically, it tells the center to lower the body's temperature when the temperature is elevated. Acetaminophen was approved by the FDA in 1951. Acetaminophen is metabolized (eliminated by conversion to other chemicals) by the liver. The potential for acetaminophen to harm the liver is increased when it is combined with alcohol or drugs that also harm the liver. When used appropriately, side effects are rare. The most serious side effect is liver damage due to large doses, chronic use or concomitant use with alcohol or other drugs that also damage the liver.