Motusol Max (Diclofenac Sodium)

Diclofenac sodium is applied topically to manage inflammation and pain in several musculoskeletal conditions.

• Osteoarthritis (knee): reduces joint pain and improves mobility.
• Rheumatoid arthritis (hand or wrist): alleviates local inflammation and discomfort.
• Acute musculoskeletal injury: provides rapid relief of pain and swelling.
• Post‑operative wound pain: diminishes localized postoperative discomfort.
• Soft‑tissue sprains: eases pain and limits inflammatory response.

• Diclofenac sodium inhibits cyclooxygenase (COX‑1 and COX‑2) enzymes in peripheral tissues, decreasing the synthesis of prostaglandins that mediate inflammation, pain, and fever. By limiting prostaglandin production at the site of application, the drug reduces local vascular permeability, edema, and nociceptor sensitisation, resulting in analgesic and anti‑inflammatory effects.

Topical diclofenac may cause a range of skin‑related and systemic reactions.

Common Side Effects

• Skin irritation: mild burning or stinging at the application site.
• Erythema: redness of the treated skin.
• Pruritus: itching around the area of use.
• Dryness: localized dry skin or flaking.
• Rash: mild maculopapular eruption.
• Edema: slight swelling where applied.

Serious or Rare Side Effects

• Severe allergic reactions: urticaria, angioedema, or anaphylaxis.
• Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Hepatotoxicity: abnormal liver function tests.
• Cardiovascular events: increased risk of thrombotic events.
• Gastrointestinal ulceration or bleeding (systemic absorption).
• Renal impairment: reduced kidney function in susceptible individuals.

When using Motusol Max, consider the following safety measures.

• Avoid application on broken or infected skin: may increase systemic absorption.
• Do not exceed the recommended surface area: limit to the prescribed region.
• Concurrent systemic NSAIDs: increase risk of adverse effects.
• Anticoagulant therapy: monitor for bleeding tendencies.
• Pregnancy and lactation: consult a healthcare professional before use.
• Store at room temperature: keep in the original packaging, protect from moisture and light.

Diclofenac sodium can interact with several drug classes; awareness helps minimise risk.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): heightened bleeding risk.
• Lithium: increased lithium serum levels.
• Diuretics (e.g., thiazides): potential renal function decline.
• ACE inhibitors or ARBs: may reduce renal perfusion.
• Other NSAIDs or COX‑2 inhibitors: additive toxicity.

Moderate Interactions (Monitor Closely)

• Antihypertensives: possible reduction in blood pressure control.
• Methotrexate: increased methotrexate toxicity.
• Corticosteroids: heightened gastrointestinal ulcer risk.
• SSRIs or SNRIs: modest increase in bleeding tendency.
• Alcohol: may exacerbate gastrointestinal irritation.