Mesulid (Nimesulide)

Nimesulide is employed to manage pain and inflammation that arise from prostaglandin‑mediated pathways in various musculoskeletal conditions.

• Acute musculoskeletal pain: provides rapid reduction of pain intensity in sprains, strains, and soft‑tissue injuries.
• Inflammatory joint conditions: decreases swelling and improves mobility during osteoarthritis flare‑ups.
• Post‑operative discomfort: alleviates localized pain and inflammation after minor surgical procedures.
• Low‑back muscle strain: reduces lumbar discomfort associated with muscle strain.

• Nimesulide selectively inhibits cyclooxygenase (COX) enzymes, primarily COX‑2, leading to a decrease in prostaglandin synthesis at the site of application. By limiting prostaglandin‑mediated inflammation, it reduces peripheral sensitisation of nociceptors, thereby providing analgesic and anti‑inflammatory effects without significant impact on platelet function.

Adverse reactions may occur following cutaneous application of Nimesulide. Most are mild and reversible, but rare serious events have been reported.

Common Side Effects

• Skin irritation at the application site: mild redness or itching.
• Burning sensation: transient warmth where the product is applied.
• Headache: mild and self‑limiting.
• Gastrointestinal discomfort: occasional mild nausea.

Serious or Rare Side Effects

• Stevens‑Johnson syndrome: severe skin reaction requiring immediate medical attention.
• Hepatic dysfunction: elevated liver enzymes or hepatitis.
• Severe allergic reaction: swelling, hives, or difficulty breathing.
• Photosensitivity: exaggerated skin response to sunlight.
• Skin necrosis: localized tissue death at the site of application.

Before using Mesulid, consider the following safety measures.

• Hypersensitivity: avoid if the patient has known allergy to nimesulide or other NSAIDs.
• Hepatic impairment: contraindicated in patients with existing liver disease; monitor liver function if use is unavoidable.
• Renal dysfunction: use with caution in severe renal impairment; assess renal function regularly.
• Pregnancy and lactation: avoid unless clearly indicated by a qualified healthcare professional.
• Concomitant anticoagulants: increased risk of bleeding; evaluate benefit‑risk ratio.
• Store at ambient temperature: keep below 25°C, protect from moisture and direct sunlight.

Nimesulide may interact with other medicines, altering efficacy or safety.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): heightened bleeding risk.
• Other NSAIDs or COX‑2 inhibitors: additive gastrointestinal toxicity.
• CYP2C9 inhibitors (e.g., fluconazole): increased plasma levels of nimesulide.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: possible reduction in renal function.
• Diuretics: may exacerbate renal impairment.
• Oral hypoglycemics: potential enhancement of hypoglycaemic effect.
• Lithium: increased lithium concentrations.
• Methotrexate: reduced clearance leading to toxicity.