Diclofenac Sodium Medications

Diclofenac Sodium Info

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What is Diclofenac Sodium?

Diclofenac sodium is a non-steroidal anti-inflammatory drug (NSA ID) that helps reduce pain and swelling. It belongs to a class of medicines that work by limiting the body’s production of certain chemicals involved in inflammation. You will find diclofenac sodium in several common products, such as Voltaren, the generic Diclofenac tablets, and Voveran Gel.

Medications with Diclofenac Sodium

A number of medicines available in the UK contain diclofenac sodium. The most widely recognised brands are:

• Voltaren - sold as oral tablets, capsules and a topical gel.
• Diclofenac - generic tablets and capsules that may be supplied in strengths such as 25 mg, 50 mg or 75 mg.
• Voveran Gel - a topical preparation that delivers diclofenac directly to the skin.

These products come in several forms: solid tablets for swallowing, soft capsules for easier ingestion, and gels that are applied to the skin over painful joints or muscles. While the active ingredient is the same, the dosage strength and how quickly the medicine works can differ between oral and topical versions. All of these options are approved for use in the UK and are available on prescription or, for some strengths, over the counter.

What Does Diclofenac Sodium Treat?

Diclofenac sodium is commonly used for conditions where pain and inflammation are present. Typical uses include:

• Osteoarthritis - helps ease joint pain and stiffness in the hips, knees, hands and other joints.
• Rheumatoid arthritis - reduces swelling and discomfort in inflamed joints.
• Ankylosing spondylitis - eases back pain caused by this chronic inflammatory condition.
• Acute musculoskeletal injuries - such as sprains, strains or bruises from sports or everyday activities.
• Post-operative pain - relieves discomfort after minor surgical procedures.
• Dental pain - can be prescribed after tooth extraction or oral surgery to control pain.

These indications are approved by the Medicines and Healthcare products Regulatory Agency (MHRA) for the UK. Some clinicians may also prescribe diclofenac for other types of pain, but the above list covers the principal, evidence-based uses.

How Diclofenac Sodium Works

When you take diclofenac sodium, it blocks the activity of enzymes called cyclo-oxygenase (COX). These enzymes help produce prostaglandins, chemicals that signal pain and cause swelling. By limiting prostaglandin formation, diclofenac reduces both the sensation of pain and the accompanying inflammation. The effect can start within an hour for oral preparations, while the gel works locally at the site where it is applied.

Safety Information

Common Side Effects

Most people experience only mild, short-lasting reactions, such as:

• Stomach upset or mild heartburn.
• Headache or dizziness.
• Minor skin irritation where a gel is applied.

These symptoms usually resolve on their own and do not require medical intervention unless they persist.

Serious Reactions

Although rare, some reactions need urgent attention:

• Sudden difficulty breathing, wheezing or swelling of the face, lips or tongue.
• Severe rash, blistering or peeling skin.
• Unexplained stomach pain, black or bloody stools, or vomiting blood.

If any of these signs appear, seek medical care immediately.

Who Should Be Cautious

People with certain health conditions should discuss diclofenac use with a pharmacist or other healthcare professional before starting any product containing it:

• Existing stomach or intestinal ulcers.
• Severe heart failure or uncontrolled high blood pressure.
• Kidney or liver impairment.
• Known hypersensitivity to diclofenac or other NSAIDs.

Pregnant women, especially in the third trimester, are generally advised to avoid diclofenac unless explicitly directed by a specialist.

Interaction Awareness

Diclofenac sodium can interact with other substances:

• Other NSAIDs or aspirin may increase the risk of stomach bleeding.
• Blood-thinning medicines (e.g., warfarin) can amplify bleeding tendencies.
• Certain antidepressants (SSRIs) and diuretics may also raise the chance of gastrointestinal side effects.
• Alcohol can irritate the stomach lining and should be limited while using oral diclofenac.

Topical gels have fewer systemic interactions, but avoid applying them to broken skin and wash hands thoroughly after use. For a full list of possible interactions, refer to the specific product’s information leaflets.

What to Know Before Using

• Store tablets and capsules in a cool, dry place away from direct sunlight.
• Keep gel tubes tightly sealed and protect them from excessive heat.
• Treatment length varies: oral forms are often used for short-term pain relief, while gels may be applied for several weeks under guidance.
• Always follow the instructions that accompany your specific medication; differences in strength and formulation mean that guidance is not interchangeable between products.

Key Terms

NSAID: A group of medicines that reduce inflammation, pain and fever.

COX (cyclo-oxygenase): Enzymes involved in making prostaglandins, which cause pain and swelling.

Topical gel: A medication applied to the skin to act locally rather than being absorbed systemically.

Prostaglandin: A chemical in the body that promotes inflammation, pain and fever.

Important Notice

This article offers general educational information about diclofenac sodium as an active substance used in various medicines. Its purpose is to help patients better understand the ingredient and the conditions it is used to treat. It is not a substitute for professional medical advice or for the specific instructions provided with individual products. Medicines containing diclofenac sodium may differ in formulation, strength, and directions for use. Always consult the labeling of your particular medication and follow your healthcare provider’s guidance for complete information on proper use, dosage, and safety.