Millions of people now depend on aspirin, ibuprofen, naproxen and a host of other pills called "non-steroidal anti-inflammatory drugs," or NSAIDs. They're used for arthritis, everyday aches, recovery from surgery and a myriad of other pains. Many are available without a prescription; others come in higher-dose prescription-only strengths.

Diclofenac, also known as Voltaren is used to reduce pain, inflammation and stiffness caused by many conditions, such as osteoarthritis, rheumatoid arthritis, abdominal cramps associated with menstruation, and ankylosing spondylitis. Diclofenac may also be used for purposes other than those listed in this medication guide.