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Arthritis is a joint disorder featuring inflammation. A joint is an area of the body where two different bones meet. A joint functions to move the body parts connected by its bones. Arthritis literally means inflammation of one or more joints.
Arthritis is frequently accompanied by joint pain. Joint pain is referred to as arthralgia.
There are many types of arthritis (over 100 identified, and the number is growing). The types range from those related to wear and tear of cartilage (such as osteoarthritis) to those associated with inflammation resulting from an overactive immune system (such as rheumatoid arthritis). Together, the many types of arthritis make up the most common chronic illness in the United States.
The causes of arthritis depend on the form of arthritis. Causes include injury (leading to osteoarthritis), metabolic abnormalities (such as gout and pseudogout), hereditary facto...
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NAPRELAN®
(naproxen sodium) Controlled-Release Tablets
Equivalent to 375 mg and 500 mg naproxen
NAPRELAN (naproxen sodium) Controlled Release Tablets, 375 mg and 500 mg
Cardiovascular Risk
Gastrointestinal Risk
NAPRELAN®* Tablets contain naproxen sodium, a member of the arylacetic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). NAPRELAN® (naproxen sodium) Tablets use the proprietary IPDAS®** (Intestinal Protective Drug Absorption System) technology. It is a rapidly disintegrating tablet system combining an immediate release component and a sustained release component of microparticles that are widely dispersed, allowing absorption of the active ingredient throughout the gastrointestinal (GI) tract, maintaining blood levels over 24 hours. The chemical name for naproxen sodium is 2-naphthaleneacetic acid, 6-methoxy-a-methyl-sodium salt, (S)- with the following structural formula:
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Naproxen sodium
Molecular Formula: C14H13NaO3 Molecular
Weight: 252.24
Naproxen sodium is an odorless crystalline powder, white to creamy in color. It is soluble in methanol and water. NAPRELAN® Tablets contain 412.5 mg or 550 mg of naproxen sodium, equivalent to 375 mg and 500 mg of naproxen and 37.5 mg and 50 mg sodium respectively. Each NAPRELAN® (naproxen sodium) Tablet also contains the following inactive ingredients: ammoniomethacrylate copolymer Type A, ammo-niomethacrylate copolymer Type B, citric acid, crospovidone, magnesium stearate, methacrylic acid copolymer Type A, microcrystalline cellulose, povidone, and talc. The tablet coating contains hydrox-ypropyl methylcellulose, polyethylene glycol, and titanium dioxide.
Last reviewed on RxList: 12/14/2007
This monograph has been modified to include the generic and brand name in many instances.
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