Moclavin (Amoxicillin, Clavulanic Acid)

Moclavin, a penicillin‑type antibacterial, is indicated for infections caused by susceptible bacteria in several organ systems.

• Acute bacterial sinusitis: reduces infection and alleviates sinus pressure and discharge.
• Acute otitis media: eradicates the causative pathogens and improves ear pain.
• Community‑acquired pneumonia: clears pulmonary infection and improves breathing function.
• Uncomplicated urinary tract infections: eliminates uropathogens and resolves dysuria.
• Skin and soft‑tissue infections: treats cellulitis and other superficial bacterial skin conditions.

• Amoxicillin interferes with bacterial cell wall synthesis by binding to penicillin‑binding proteins, leading to cell lysis. Clavulanic acid binds irreversibly to beta‑lactamase enzymes, protecting amoxicillin from enzymatic degradation and extending its antibacterial spectrum against beta‑lactamase‑producing organisms.

Moclavin may cause a range of adverse reactions, most of which are mild and self‑limiting.

Common Side Effects

• Nausea: mild stomach upset often occurring after dosing.
• Diarrhea: loose stools that may be watery.
• Rash: skin redness or mild itching.
• Headache: transient head discomfort.

Serious or Rare Side Effects

• Anaphylaxis: severe allergic reaction with breathing difficulty and swelling.
• Clostridioides difficile‑associated colitis: severe diarrhea with abdominal pain.
• Hepatic injury: elevated liver enzymes or jaundice.
• Stevens‑Johnson syndrome: severe skin blistering and mucosal involvement.
• Neutropenia: marked reduction in white blood cells increasing infection risk.

Before prescribing Moclavin, clinicians should consider several safety factors.

• Assess renal function: adjust dose in patients with renal impairment.
• Monitor for allergic reactions: discontinue immediately if severe rash or anaphylaxis occurs.
• Use with caution in hepatic disease: observe liver function tests.
• Avoid in patients with known hypersensitivity to penicillins or beta‑lactamase inhibitors.
• Pregnancy category B: generally safe but should be used only when clearly needed.
• Store below 25°C: keep in the original pack, protect from moisture.

Moclavin can interact with other medicines, altering efficacy or safety.

Major Interactions (Avoid)

• Probenecid: increases amoxicillin plasma levels, raising toxicity risk.
• Methotrexate: may enhance methotrexate toxicity.
• Oral contraceptives: may reduce hormonal efficacy, increasing pregnancy risk.
• Warfarin: can potentiate anticoagulant effect, requiring INR monitoring.

Moderate Interactions (Monitor Closely)

• Allopurinol: heightened risk of skin rash.
• Ciprofloxacin: increased seizure risk in susceptible individuals.
• Clarithromycin: may augment gastrointestinal side effects.