Diclofenac sodium is the generic name for several branded medications. The most widely recognized brand name for diclofenac sodium in the United States is Voltaren [1]. Other brand names for diclofenac sodium include Cataflam and Zorvolex [2].
What is Diclofenac Sodium Used For?
Diclofenac sodium is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammation associated with various conditions. These include osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis [1][3]. It is also prescribed for acute pain, menstrual pain (dysmenorrhea), and migraine headaches [1][4].
How Does Diclofenac Sodium Work?
Diclofenac sodium works by blocking the production of prostaglandins, which are chemicals in the body that cause inflammation, pain, and fever [3]. By reducing prostaglandin levels, diclofenac sodium helps alleviate these symptoms [3].
When Does the Patent for Voltaren Expire?
The original patents for diclofenac sodium have long since expired, allowing for the availability of generic versions [5]. However, specific formulations or delivery methods of diclofenac sodium may have had their own patent protection, influencing the market exclusivity of those particular products [5]. Information on specific patent expiries for various diclofenac formulations can be found at DrugPatentWatch.com [5].
What are the Different Forms of Diclofenac Sodium Available?
Diclofenac sodium is available in various forms, including oral tablets, extended-release tablets, delayed-release tablets, capsules, topical gels, and ophthalmic solutions [1][2]. Brand names are often associated with specific formulations, such as Voltaren for oral tablets and topical gel, and Zorvolex for oral capsules [1][2].
Are There Generic Alternatives to Branded Diclofenac Sodium?
Yes, due to patent expiries, generic versions of diclofenac sodium are widely available [5]. These generic products contain the same active ingredient as their brand-name counterparts and are generally more affordable [5].
What Are the Potential Side Effects of Diclofenac Sodium?
Common side effects of diclofenac sodium can include gastrointestinal issues such as upset stomach, nausea, diarrhea, and constipation [1]. More serious side effects, though less common, can involve stomach ulcers, bleeding, heart problems, and kidney issues [1][3]. Patients should discuss potential risks with their healthcare provider [1][3].