MST and Voltaren

• Generic Name: magnesium salicylate
• Dosage Forms: n.a.
• Other Brand Names: Doans Pills Extra Strength, MST, Nuprin Backache, Magan, Mobidin, Doans Pills, Bayer Select Backache Pain Formula, Doans Extra Strength

MST is a salicylate (sa-LIS-il-ate). It works by reducing substances in the body that cause pain, fever, and inflammation.

MST is used to treat mild-to-moderate pain, fever, inflammatory conditions, and pain, swelling, or stiffness associated with arthritis.

MST may also be used for purposes not listed in this medication guide.

• Generic Name: diclofenac
• Dosage Forms: tablet, delayed release
• Other Brand Names: Voltaren, Voltaren-XR, also Cambia, Cataflam, Zipsor, Zorvolex, Dyloject, Cambia

Voltaren (diclofenac) is a nonsteroidal anti-inflammatory drug (NSAID). Voltaren works by reducing substances in the body that cause pain and inflammation.

Voltaren oral tablets are used to treat mild to moderate pain, or signs and symptoms of osteoarthritis or rheumatoid arthritis. Voltaren is also used to treat ankylosing spondylitis.

Voltaren ophthalmic eyedrops are used to treat pain, inflammation, and light sensitivity after eye surgery or for certain eye conditions.

Voltaren gel is used to treat osteoarthritis of the knees and hands.

You should not use Voltaren if you have a history of allergic reaction to aspirin or NSAIDs (non-steroidal anti-inflammatory drugs).

Voltaren can increase your risk of fatal heart attack or stroke, especially if you use it long term or take high doses, or if you have heart disease. Even people without heart disease or risk factors could have a stroke or heart attack while taking this medicine.

Voltaren may also cause stomach or intestinal bleeding, which can be fatal. These conditions can occur without warning while you are using Voltaren, especially in older adults.