1) Acetaminophen.Acetaminophen (Tylenol, others) can relieve pain, but it doesn't reduce inflammation. It has been shown to be effective for people with osteoarthritis who have mild to moderate pain. Taking more than the recommended dosage of acetaminophen can cause liver damage.
2) Nonsteroidal anti-inflammatory drugs (NSAIDs). NSAIDs may reduce inflammation and relieve pain. Over-the-counter NSAIDs include ibuprofen (Advil, Motrin, others) and naproxen (Aleve, others). Stronger NSAIDs are available by prescription. NSAIDs can cause stomach upset, ringing in your ears, cardiovascular problems, bleeding problems, and liver and kidney damage. Older people have the highest risk of complications.
3) Narcotics. These types may provide relief from more severe osteoarthritis pain. These stronger medications carry a risk of dependence, though that risk is thought to be small in people who have severe pain. Side effects may include nausea, constipation and sleepiness.