Misofen (Diclofenac Sodium, Misoprostol)

Misofen combines diclofenac and misoprostol to address gastrointestinal risks associated with NSAID therapy.

• Prevention of NSAID‑induced gastric ulcers: reduces ulcer formation risk in patients receiving NSAID treatment.
• Gastro‑protection during diclofenac therapy: maintains gastric mucosal integrity while diclofenac is administered.
• Management of dyspepsia linked to NSAID use: alleviates upper‑GI discomfort in patients on NSAIDs.

• Diclofenac sodium inhibits cyclooxygenase (COX‑1 and COX‑2) enzymes, decreasing prostaglandin synthesis and thereby reducing inflammation and pain. Misoprostol is a synthetic prostaglandin E1 analogue that stimulates gastric mucus and bicarbonate secretion, enhancing mucosal defense and promoting ulcer healing. The combined effect provides anti‑inflammatory action while protecting the gastric lining from NSAID‑related injury. By concurrently lowering prostaglandin‑mediated acid secretion and increasing protective factors, the formulation balances ulcerogenic and protective pathways.

Misofen may cause a range of adverse reactions, which are categorized by frequency and severity.

Common Side Effects

• Abdominal pain: mild discomfort in the stomach area.
• Diarrhea: loose stools occurring intermittently.
• Nausea: feeling of sickness or urge to vomit.
• Headache: mild to moderate head pain.

Serious or Rare Side Effects

• Gastrointestinal bleeding: severe bleeding in the digestive tract.
• Ulcer perforation: hole formation in a gastric ulcer.
• Severe allergic reaction: anaphylaxis or angioedema requiring emergency care.
• Renal impairment: sudden decline in kidney function.

Before prescribing Misofen, clinicians should evaluate several safety considerations.

• Pregnancy: contraindicated (Category X) due to risk of fetal abnormalities.
• Renal impairment: use with caution; monitor kidney function regularly.
• Cardiovascular risk: NSAID component may increase risk of thrombotic events.
• History of ulcer disease: assess benefit‑risk balance before initiation.
• Store at ambient temperature: keep in original packaging, protect from moisture and light.

Misofen can interact with other medicines; awareness of major and moderate interactions helps prevent complications.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): increased risk of bleeding.
• Selective COX‑2 inhibitors: additive NSAID effect raising ulcer risk.
• Lithium: diclofenac may raise lithium serum levels.
• Methotrexate: diclofenac can reduce methotrexate clearance, raising toxicity.

Moderate Interactions (Monitor Closely)

• ACE inhibitors: combined use may impair renal function.
• Diuretics: may affect renal perfusion when used together.
• Corticosteroids: concurrent use heightens gastrointestinal ulcer risk.