What Are the Known Adverse Effects of Meropenem?

What Are the Known Adverse Effects of Meropenem? ?

Mindy Hausler , 28 Aug 2026

1 Answers

Meropenem is generally well-tolerated, but it is not devoid of adverse effects. The most frequently reported events include:

  • Gastrointestinal reactions: Diarrhea, nausea, vomiting, and dyspepsia.
  • Injection site complications: Pain, erythema, and thrombophlebitis.
  • Allergic responses: Rashes, urticaria, and rare anaphylaxis, particularly in individuals with ?-lactam allergies.
  • Neurological manifestations: Headache, dizziness, and seizures—though the seizure threshold is significantly lower compared to other carbapenems such as imipenem.
  • Hepatobiliary disturbances: Rare cases of cholestatic hepatitis and transient elevations in liver enzymes.
  • Electrolyte imbalances: Hypokalemia, potentially leading to cardiac arrhythmias if uncorrected.