Mupirocine Infectopharm (Mupirocin)

Mupirocin is a topical antibacterial indicated for bacterial colonisation and skin infections caused by susceptible organisms.

• Nasal decolonisation of Staphylococcus aureus (including MRSA): eliminates carrier state to reduce infection risk.
• Impetigo (non‑bullous): treats superficial skin infection caused by Staphylococcus or Streptococcus species.
• Secondary bacterial skin infections: controls infection in minor cuts, abrasions or eczema lesions.

• Mupirocin inhibits bacterial isoleucyl‑tRNA synthetase, an enzyme essential for protein synthesis. By blocking the attachment of isoleucine to its tRNA, the drug prevents the formation of functional proteins, leading to bacterial growth arrest and eventual cell death of susceptible Gram‑positive organisms.

Mupirocin is generally well tolerated, but local and systemic reactions can occur.

Common Side Effects

• Nasal irritation: mild burning or stinging sensation.
• Itching or pruritus at the application site.
• Dryness of nasal mucosa.
• Sneezing or mild rhinorrhoea.
• Headache.
• Transient erythema.

Serious or Rare Side Effects

• Allergic reaction: rash, urticaria, or angioedema.
• Anaphylaxis: severe, potentially life‑threatening hypersensitivity.
• Severe dermatitis or contact dermatitis.
• Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Secondary infection with resistant organisms.
• Systemic absorption leading to hepatic or renal effects (very rare).

Before using Mupirocine Infectopharm, consider the following safety measures.

• Assess colonisation status: confirm Staphylococcus aureus carriage before treatment.
• Hypersensitivity: avoid in patients with known allergy to mupirocin or formulation excipients.
• Prescription use only: apply exactly as directed by a healthcare professional.
• Monitor for worsening infection: seek medical advice if signs of spreading or systemic infection appear.
• Storage: Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Mupirocin has limited systemic interactions, but certain combinations may affect safety or efficacy.

Major Interactions (Avoid)

• Concurrent use with other nasal antibiotics: may increase local irritation or reduce effectiveness.
• Use with otic or ophthalmic preparations containing preservatives: risk of additive toxicity.

Moderate Interactions (Monitor Closely)

• Systemic antibiotics that alter normal flora: may affect colonisation dynamics.
• Antifungal nasal agents: monitor for combined mucosal irritation.
• Immunosuppressive therapy: observe for delayed wound healing or infection spread.