What is OTC Diclofenac?
Diclofenac is available over-the-counter (OTC) in topical formulations for the relief of arthritis pain [1]. These products are typically gels or patches applied directly to the skin at the site of pain [1][2].
How Does OTC Diclofenac Work?
OTC diclofenac is a nonsteroidal anti-inflammatory drug (NSAID) [1]. It works by reducing the production of prostaglandins, which are substances in the body that cause inflammation and pain [3]. By inhibiting prostaglandin synthesis, diclofenac helps to alleviate pain and swelling associated with osteoarthritis [3].
What Conditions Can OTC Diclofenac Treat?
Currently, OTC diclofenac is indicated for the relief of mild to moderate arthritis pain, specifically for osteoarthritis of the joints that are accessible to topical application [1][4]. This typically includes pain in the knees, hands, and feet [1].
When Did Diclofenac Become Available Over-the-Counter?
The U.S. Food and Drug Administration (FDA) approved the first OTC topical diclofenac product in 2007 [1].
How Does OTC Diclofenac Compare to Other Pain Relievers?
As an NSAID, OTC diclofenac offers a targeted approach to pain relief, focusing on the specific joint affected [1][3]. Unlike oral NSAIDs, topical formulations are designed to have fewer systemic side effects because the drug is absorbed directly into the affected area rather than circulating throughout the body [3][5]. However, oral NSAIDs may offer broader pain relief for more widespread pain [3]. Acetaminophen, another common pain reliever, works differently by targeting pain signals in the brain and does not have significant anti-inflammatory effects [3].
What Are the Risks and Side Effects of OTC Diclofenac?
While topical diclofenac generally has a lower risk of systemic side effects compared to oral NSAIDs, some localized reactions can occur, such as skin irritation, redness, or rash [1][5]. Individuals with a history of allergic reactions to aspirin or other NSAIDs should use caution [1]. Patients with certain medical conditions, including stomach ulcers, bleeding problems, heart disease, or kidney disease, should consult a healthcare professional before using any NSAID, including topical diclofenac [3][5].
Can Patients Use Other NSAIDs While Using Topical Diclofenac?
It is generally not recommended to use topical diclofenac concurrently with other NSAIDs, whether oral or topical, without consulting a healthcare provider [1][5]. Combining NSAIDs can increase the risk of side effects [5].
Where Can I Find More Information on Diclofenac's Patent and Exclusivity Status?
Information regarding drug patents and exclusivity, including for diclofenac products, can be found on DrugPatentWatch.com [6].