Meropenem Steriscience (Meropenem)

Meropenem is a carbapenem antibiotic used to treat serious bacterial infections.

• Complicated intra‑abdominal infections: effective in eliminating the causative Gram‑negative and anaerobic bacteria.
• Complicated urinary tract infections: eradicates resistant uropathogens causing severe infections.
• Meningitis: achieves therapeutic concentrations in cerebrospinal fluid to treat bacterial meningitis.
• Hospital‑acquired pneumonia: active against multidrug‑resistant organisms in lower respiratory infections.
• Septicemia: provides rapid bactericidal activity in bloodstream infections.

• Meropenem binds with high affinity to penicillin‑binding proteins (PBPs) on bacterial cell walls, inhibiting the final transpeptidation step of peptidoglycan synthesis. This disruption weakens the cell wall, leading to osmotic lysis and bactericidal activity against a broad spectrum of Gram‑negative, Gram‑positive and anaerobic organisms.

Common Side Effects

• Nausea: mild to moderate gastrointestinal discomfort.
• Diarrhea: may be watery and self‑limiting.
• Headache: transient and usually resolves without intervention.
• Rash: mild skin erythema or pruritus.
• Elevated liver enzymes: transient increase in hepatic transaminases.
• Injection site reactions: pain or erythema at the infusion site.

Serious or Rare Side Effects

• Seizures: especially in patients with pre‑existing CNS disorders or high doses.
• Severe allergic reactions: anaphylaxis, angioedema, or Stevens‑Johnson syndrome.
• Clostridioides difficile colitis: antibiotic‑associated colitis requiring prompt treatment.
• Renal impairment: acute kidney injury in susceptible individuals.
• Neutropenia or thrombocytopenia: marked reduction in blood cell counts.

Meropenem should be used with caution in specific clinical situations.

• Renal function: adjust dose in patients with impaired renal function.
• Hepatic function: monitor liver enzymes during prolonged therapy.
• Seizure risk: avoid or use cautiously in patients with a history of seizures or CNS disorders.
• Allergy: do not use in patients with known hypersensitivity to carbapenems or β‑lactam antibiotics.
• Pregnancy: prescribe only when the potential benefit justifies the potential risk to the fetus.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Meropenem may interact with other medicines; monitoring is advised.

Major Interactions (Avoid)

• Valproic acid: may reduce serum valproate levels, increasing seizure risk.
• Probenecid: can increase meropenem plasma concentrations, raising toxicity potential.
• Nephrotoxic agents: concurrent use may exacerbate renal impairment.

Moderate Interactions (Monitor Closely)

• Aminoglycosides: monitor renal function and drug levels.
• Loop diuretics: watch for electrolyte disturbances.
• Warfarin: observe INR values for possible anticoagulation changes.