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Acetaminophen is a pain-relief medicine used to treat headaches, muscle aches, arthritis, colds and fevers. It is the active ingredient in Tylenol and many other products, including some cold medicines. As of 2015, acetaminophen is the most widely used fever- and pain-r...


Acetaminophen overuse in children may cause nausea and vomiting, according to the U.S. Food and Drug Administration. However, the drug is generally safe to take when used as directed by the package label or physician.


Acetaminophen is an analgesic that affects the hypothalamus to prevent fevers, according to Medscape. In addition, it's thought that acetaminophen blocks nerve signals from pain nerves and reduces the amount of a hormone-like substance called prostaglandin in the centra...


According to Drugs.com, the maximum daily dose of acetaminophen for an adult is 4 grams, and each dose should be no more than 1 gram at a time. If drinking alcohol, the maximum daily dose should be reduced to 2 grams.


Possible side effects of acetaminophen include unusual tiredness or weakness, skin rash, hives and itching, according to Mayo Clinic. Additional potential side effects include sore throat unrelated to an existing condition being treated, white spots on the lips or mouth...


Ibuprofen is the generic form of a non-steroidal anti-inflammatory drug, or NSAID, used to treat mild to moderate pain. It does not contain acetaminophen. Ibuprofen is sold under the trade names Advil, Motrin, Medipren, Nuprin and others.


It is safe to alternate acetaminophen and ibuprofen every three hours, according to Ask Dr. Sears. Patients can also take acetaminophen if the effects of ibuprofen wear off within a six-hour period. Patients can take ibuprofen in conjunction with antibiotics and cold re...