Meropenem Eberth (Meropenem)

Meropenem is a broad‑spectrum carbapenem used to treat serious infections caused by susceptible bacteria.

• Complicated intra‑abdominal infections: provides bacterial eradication and clinical cure in patients with severe intra‑abdominal infection.
• Complicated urinary tract infections: eliminates pathogenic organisms and resolves infection in the urinary tract.
• Hospital‑acquired pneumonia: achieves microbiological clearance and improves respiratory outcomes.
• Ventilator‑associated pneumonia: targets resistant pathogens and supports recovery in ventilated patients.
• Meningitis: penetrates the cerebrospinal fluid to treat bacterial meningitis.
• Sepsis and febrile neutropenia: offers rapid bactericidal activity in systemic infections.

• Meropenem binds to multiple penicillin‑binding proteins (PBPs) on the bacterial cell wall, inhibiting the final transpeptidation step of peptidoglycan synthesis. This disruption leads to weakened cell walls, osmotic instability, and bacterial lysis. The molecule is resistant to most β‑lactamases, providing activity against a wide range of Gram‑positive, Gram‑negative, and anaerobic organisms.

Common Side Effects

• Nausea: mild to moderate gastrointestinal upset.
• Diarrhea: may be watery and self‑limited.
• Rash: erythematous skin eruptions.
• Infusion site reactions: pain, erythema, or phlebitis at the IV site.
• Elevated liver enzymes: transient increases in ALT/AST.
• Headache: mild to moderate intensity.

Serious or Rare Side Effects

• Seizures: especially in patients with CNS disorders or renal impairment.
• Clostridioides difficile colitis: severe diarrhea due to gut flora disruption.
• Anaphylaxis: acute, potentially life‑threatening hypersensitivity.
• Severe skin reactions: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Thrombocytopenia: notable drop in platelet count.
• Renal toxicity: acute kidney injury in susceptible individuals.

Meropenem should be used with careful clinical monitoring and appropriate dose adjustments.

• Renal function: adjust dose in patients with impaired clearance.
• Seizure risk: avoid or monitor in patients with pre‑existing CNS disease.
• Hypersensitivity: do not use in individuals with known carbapenem or β‑lactam allergy.
• Liver function: monitor transaminases during prolonged therapy.
• Concomitant nephrotoxins: use cautiously with other renal‑impacting drugs.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Meropenem may interact with several agents that affect drug levels or increase toxicity.

Major Interactions (Avoid)

• Valproic acid: carbapenems reduce serum valproate concentrations, risking seizure breakthrough.
• Probenecid: decreases renal excretion, potentially raising meropenem levels.

Moderate Interactions (Monitor Closely)

• Loop diuretics: may exacerbate renal impairment.
• Aminoglycosides: combined nephrotoxic potential.
• NSAIDs: can affect renal function when used together.
• Warfarin: monitor INR as alterations in gut flora may affect vitamin K synthesis.
• Other β‑lactams: assess for additive toxicity or overlapping allergy risk.