Both acetaminophen and NSAIDs reduce fever and relieve pain caused by muscle aches and stiffness, but only NSAIDs can also reduce inflammation (swelling and irritation). Acetaminophen and NSAIDs also work differently. NSAIDs relieve pain by reducing the production of prostaglandins, which are hormone-like substances that cause pain. Acetaminophen works on the parts of the brain that receive the “pain messages.” NSAIDs are also available in a prescription strength that can be prescribed by your physician.
Using NSAIDs increase the risk of heart attack or stroke and have also been known to cause stomach ulcers and bleeding. They can also cause kidney problems.