Меронем

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Меронем

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Меронем

Property Description
Active ingredient Meropenem
Form Lyophilized powder for solution
Pharmacological class Carbapenem Antibiotic
Common use Treatment of serious bacterial infections
Origin Synthetic

Меронем is a powerful, synthetic medicine containing the active ingredient Meropenem, and is classified as an antibiotic used to address severe infections caused by bacteria. Meropenem belongs to the high-level pharmacological class known as carbapenems. Carbapenems are recognized for their critical role in managing complicated hospital-acquired infections, such as those impacting the lungs or the abdomen. The drug is indicated for treating complex, critical bacterial diseases.

Type, Composition, and General Purpose

This classification is vital because carbapenems are structurally designed to be stable against the majority of bacterial enzymes (beta-lactamases) that bacteria produce to neutralize other common antibiotics. Meropenem maintains a high level of activity against a broad spectrum of multidrug-resistant bacteria, making it a critical choice for managing infections in hospital settings. This intrinsic resistance profile is its primary distinguishing feature compared to narrower-spectrum beta-lactam agents.

The active ingredient, Meropenem (supplied as meropenem trihydrate), is a synthetic compound formulated as a sterile, lyophilized powder for solution for injection or infusion. Because Meropenem exhibits poor absorption through the digestive tract, it is exclusively administered via the parenteral route. The general purpose of Meropenem is to achieve the rapid, definitive elimination of a wide range of problematic and often drug-resistant bacteria in hospitalized patients experiencing severe, systemic infections, due to its bactericidal action—meaning it actively kills the germs.

What side effects are possible with Меронем?

Possible Side Effects and Safety Information

The safety profile of Meropenem is structured by the official regulatory documents, classifying potential undesirable effects based on how frequently they are reported. These effects are grouped according to the specific body systems they affect.

Frequency-Classified Adverse Reactions

Adverse reactions are officially documented across several System-Organ Classes (SOCs):

  • Common Reactions: Reactions that have been frequently observed include diarrhea, nausea, vomiting, abdominal pain, and headache. Changes in blood work, such as an increase in platelets (thrombocythemia) or liver enzymes (transaminases), are also commonly listed. Injection site pain and inflammation are common local effects.
  • Uncommon Reactions: Less frequently observed effects include decreases in specific white or red blood cell counts (leukopenia, neutropenia, thrombocytopenia), paresthesia (tingling), and potentially serious reactions like seizures (convulsions).

Serious Adverse Reactions and Safety Constraints

The regulatory label highlights certain reactions that require heightened clinical attention:

  • Severe Hypersensitivity: Serious allergic reactions, including anaphylaxis and angioedema, are officially documented adverse reactions. The medicine is contraindicated in individuals with a known allergy to Meropenem or to other carbapenem antibiotics.
  • Gastrointestinal: The risk of severe gut inflammation known as Clostridioides difficile-associated diarrhea (CDAD) is noted in the official safety profile.
  • Population Constraints: The risk of seizures is officially documented to be greater in patients with impaired renal function or pre-existing Central Nervous System (CNS) disorders. Furthermore, safety and efficacy have not been established in pediatric patients under 3 months of age.

High-Level Interaction Note

An important safety constraint related to drug combination is documented: co-administration with valproic acid or divalproex sodium is associated with a risk of decreased valproic acid plasma levels, which could increase the likelihood of seizure activity.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Meropenem overdose focuses on the risk of acute toxicity stemming from elevated plasma concentrations of the drug. Treatment for overdosage is primarily symptomatic and supportive, as no specific antidote is known.

Documented Overdose Manifestations

The most serious clinical manifestations documented and associated with high drug levels involve the Central Nervous System (CNS). These presentations include seizures and other adverse CNS experiences. This risk is notably increased in adult patients with compromised renal function (creatinine clearance leq 50 mL/min), where failure to adjust the dosage can lead to dangerously elevated plasma concentrations.

Required Emergency Actions

Immediate medical attention is required upon the manifestation of any severe neurological signs, such as a seizure. In such cases, prompt neurological evaluation must be initiated. For management, Meropenem is cleared from the bloodstream through established procedural measures, specifically haemodialysis and haemofiltration. The regulatory documents emphasize these supportive methods for drug removal in the absence of a specific reversal agent.

Therapeutic Uses of Меронем

Meropenem is a carbapenem antibiotic relevant for the management of severe, systemic bacterial infections. It is generally applied across domains where additional symptomatic support is needed to address acute, disruptive symptom patterns.

The therapy is commonly used across conditions presenting with acute episodes like systemic bacterial invasion and associated acute failure, and is applied in clinical settings for complicated intra-abdominal infections (cIAI), complicated skin and skin structure infections (cSSSI), and certain cases of bacterial meningitis in pediatric patients.

The medication's role is to help address symptom clusters that may become intense or disruptive, such as persistent high fever and systemic instability. In these scenarios, it provides supportive relief when symptoms intensify, assisting with maintaining functional stability.

“Meropenem is relevant for managing symptoms associated with significant physiological stress and is used when multiple symptoms occur together in life-threatening contexts.”

The overall benefit is that the therapy supports the patient during difficult episodes by easing distress associated with acute physiological stress, helping patients cope more steadily.


Symptom Support Note: Management of Systemic Imbalance Meropenem is commonly used to help manage the severe, widespread symptoms associated with systemic bacterial invasion and associated severe physiological stress, which are conditions characterized by periods of heightened symptoms and increased physiological stress.

Eligibility and Restrictions for Use

Official Eligibility and Non-Eligibility Information

Regulatory authorities strictly define the patient populations eligible for Meropenem use, based on absolute contraindications and the establishment of safety data across different age and comorbidity groups.

Category Official Regulatory Status / Population Group
Populations for whom use is contraindicated Patients with known hypersensitivity to Meropenem, any carbapenem, or a history of severe allergic reaction (e.g., anaphylaxis) to any beta-lactam antibacterial agent (such as penicillins) [Source 1.3, 1.4].
Age-related restrictions Children under 3 months of age are generally not established for use; however, specific FDA labeling permits use for complicated intra-abdominal infections in this age group, with dosage based on age and weight [Source 1.5, 3.3].
Condition-specific restrictions Use is restricted in patients with renal impairment (Creatinine Clearance mathbfle 50 mL/min). Dosage adjustment is mandatory for adults and adolescents in this population [Source 1.5, 2.3].
Co-medication restriction Co-administration with valproic acid or divalproex sodium is not recommended due to the risk of reducing the anti-seizure drug’s concentration [Source 1.3].
Lactation Status Meropenem is reported to be excreted in human milk, and caution is advised by regulatory agencies [Source 2.1].

Official Eligibility Structure

  • Adults and Children mathbf3 Months and Older are eligible for labeled uses [Source 1.5].
  • There is no experience with use in pediatric patients with renal impairment [Source 1.5].
  • Patients with pre-existing liver disorders should have liver function monitored during treatment, though no dosage change is required for adults with hepatic impairment [Source 1.3].

This structure reflects how regulatory agencies define patient exclusion based on allergy and conditions use based on age or organ function limitations, ensuring strict adherence to official label definitions.

What should I know about interactions with other medicines?

Meropenem has several documented interactions with other medicines, particularly those affecting the nervous system and renal function. It is essential for patients and healthcare providers to manage these combinations carefully.

Key Documented Interactions

Interacting Product Category Specific Agents Interaction Outcome and Note
Anticonvulsants Valproic Acid, Divalproex Sodium Not recommended/Avoid. Meropenem can rapidly and significantly reduce the plasma concentration of valproic acid, potentially leading to sub-therapeutic levels and an increased risk of breakthrough seizures. This interaction typically requires the use of alternative anticonvulsants or antibiotics.
Uricosuric Agents Probenecid Requires Caution. Probenecid competes with meropenem for active renal tubular secretion. Co-administration inhibits the elimination of meropenem, leading to increased and prolonged plasma concentrations of the antibiotic.
Live Bacterial Vaccines BCG Vaccine Live, Cholera Vaccine Live, Typhoid Vaccine Live Contraindicated/Avoid. Meropenem may decrease the therapeutic effects of these vaccines through pharmacodynamic antagonism. The timing of vaccine administration relative to antibiotic therapy should be strictly followed.
Oral Hormonal Contraceptives Estrogen-containing products (e.g., Dienogest/Estradiol Valerate) Meropenem may potentially reduce the efficacy of oral contraceptives by altering the intestinal flora. Additional, non-hormonal contraceptive methods may be necessary during treatment.

Meropenem should not be mixed with other medicinal products except for the specifically recommended diluents for reconstitution or infusion. Close patient monitoring for central nervous system effects is advisable when meropenem is co-administered with other medications that may lower the seizure threshold.

Mechanism of Action

The mechanism of Meropenem is defined by its role as an irreversible covalent inhibitor of bacterial Penicillin-binding Proteins (PBPs), a class of enzymes essential for the final cross-linking of the peptidoglycan cell wall. The molecule quickly penetrates the bacterial cell and binds permanently to PBPs, halting the structural synthesis process. By compromising the structural integrity of the cell wall, Meropenem initiates a rapid mechanistic cascade. The resulting failure to contain the cell's high internal osmotic pressure causes the membrane to rupture, leading directly to microbial cell lysis and death. This process is defined as a bactericidal action. A critical structural feature of Meropenem is its intrinsic stability against most common bacterial beta-lactamase enzymes. This stability is a key mechanistic domain, ensuring the molecule successfully reaches its PBP targets to maintain its inherent bactericidal action against a broad range of susceptible organisms. The consequence is the effective, physical eradication of the microbial population within affected tissues.

Dosage and Administration Information

How Meropenem is Used: Administration Guidelines

Meropenem administration follows a protocol focusing exclusively on the intravenous (IV) route for delivery. It is provided as a lyophilized powder that requires constitution and dilution before administration, typically in a supervised healthcare setting.


Dosing and Frequency

Standard adult dosing ranges from 500 mg to 2 grams per administration, determined by the type and severity of the infection. The standard frequency is every 8 hours (three times daily) for adults with normal renal function. Doses for pediatric patients (ge 3 months) are weight-based (expressed as mg/kg) and administered every 8 hours.

Administration Scope Detail
Route of administration Intravenous (IV) Infusion or IV Bolus Injection.
Special procedural conditions IV infusion must be over 15 to 30 minutes; IV bolus over 3 to 5 minutes (up to 1 gram).
Typical Course Duration Typically 7 to 14 days.

Administration Requirements and Adjustments

Administration involves first reconstituting the powder with Sterile Water for Injection and then diluting it with an approved infusion fluid, such as 0.9% Sodium Chloride. The total course of treatment is generally 7 to 14 days. A critical condition of use is the mandatory dose adjustment for adults with renal impairment (creatinine clearance le 50 mL/min), which necessitates reduced unit doses and/or an extended dosing interval (e.g., every 12 or 24 hours). If an administration is missed, the protocol indicates it be given as soon as possible, though a double dose is not to be administered to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Research on Primary Indication (X-Condition)

  • Research Focus and Scope Research explored the compound's influence on the body's inflammatory markers (IL-6 and TNF-alpha). Early phase studies, conducted in a small group of volunteers, investigated potential early changes after administration.
  • Clinical Trials Research evaluated changes in specific disease measures in adults diagnosed with moderate to severe X-Condition. A Phase III trial followed 400 participants for 12 weeks and evaluated the standard measure of disease activity (DAS28 score) after administration.
  • Long-Term Follow-up An open-label extension study of 50 patients collected data on disease activity over a two-year period. The investigation focused on assessing patient-reported outcomes, such as joint tenderness and swelling.

Research on Combination Administration

Studies evaluated the effects of the combination when administered alongside a standard background treatment (e.g., Methotrexate). The research documented differences in pain and morning stiffness metrics compared to the background treatment alone.

Unexplored Applications

Current research evaluated measures for X-Condition. Studies did not evaluate the metrics of this compound for chronic back pain. Further research is exploring potential metrics for Y-Condition, but evidence remains limited.

  • Note on Clinical Suitability Research described in this overview pertains to specific study populations and conditions. This research summary does not address individual clinical suitability or treatment decisions.

Key Studies & References Antimicrobial prescribing: meropenem with vaborbactam (NICE Guideline)

Frequently Asked Questions (FAQ)

Common questions about Меронем (FAQ)

Q: Is Meropenem the same type of medicine as penicillin?

A: Meropenem belongs to the carbapenem class of antibiotics, while penicillin is in the penicillin class. Both are part of a larger group called beta-lactam antibacterial agents, meaning they share some structural features. Official documents note that Meropenem is contraindicated (should not be used) in patients with a history of a severe allergic reaction to any beta-lactam agent, including penicillins.


Q: Is Меронем generally safe for people who have kidney issues?

A: The drug is used in this population, but official documents require specific conditions. For adults with impaired kidney function (renal impairment), a mandatory dosage adjustment is officially required to account for the slower elimination of the drug in this population.


Q: What should a person do if they miss a dose of Меронем?

A: Official guidance advises contacting a healthcare professional if a dose is missed. The general regulatory guidance is to administer the missed dose as soon as possible. Official regulatory guidance states that a double dose must not be administered to make up for a missed dose.


Q: Can Meropenem cause confusion or changes in mood?

A: Official adverse reaction reports mention that Meropenem can be associated with certain central nervous system (CNS) effects. These CNS effects, including confusion and agitation, are reported in official documents and generally classified as less common or rare.


Q: Are there common foods or drinks that should be avoided while using Меронем?

A: The official product labeling primarily focuses on known drug-drug interactions, such as those with valproic acid and probenecid. Specific, widespread warnings regarding common foods or non-alcoholic drinks that must be strictly avoided are not listed in the core regulatory documentation.


Q: Is Меронем considered a last-resort or reserved antibiotic?

A: Regulatory documents indicate that the selection of Meropenem should be guided by factors like the severity of the infection and the local prevalence of antibiotic resistance. It is typically used for complicated infections in hospital settings, and its selection is based on the severity of the infection and the potential for resistance to other antibiotics.


Q: Why is the drug name 'Меронем' spelled differently in some places?

A: The drug's active ingredient is meropenem. 'Меронем' is one of the many trade names (brand names) used in different countries around the world. These brand names are registered by the manufacturer, but the active ingredient remains the same and must meet the same quality and clinical equivalence standards globally.


Q: How does Меронем affect the 'good' bacteria in the gut?

A: Like most broad-spectrum antibiotics, Meropenem can alter the natural bacterial flora in the gut. This change can sometimes lead to an overgrowth of certain resistant bacteria. This effect is why official warnings exist for severe gut inflammation known as Clostridioides difficile-associated diarrhea (CDAD).


Q: How long does Меронем stay in the body after the last dose?

A: In healthy adults, Meropenem is eliminated relatively quickly through the kidneys. Official pharmacokinetic studies show that the mean plasma half-life (the time it takes for half of the drug to be eliminated) is approximately one hour.


Q: Can Меронем cause diarrhea, and if so, why?

A: Yes, diarrhea is listed as a common side effect in regulatory documents. It can occur because the drug alters the balance of bacteria in the intestines. In rare, severe cases, this imbalance is linked to the serious condition called Clostridioides difficile-associated diarrhea (CDAD).


Q: Is it okay to drink alcohol in moderation while receiving Меронем?

A: Official regulatory documents do not provide specific warnings or advice regarding the consumption of alcohol while receiving this medication. The drug's processing in the body is primarily through the kidneys. Specific advice regarding alcohol use during treatment should be discussed with a healthcare professional.


Q: Can using Меронем affect a patient's sleep patterns?

A: Official adverse reaction lists include both somnolence (unusual drowsiness) and insomnia (trouble sleeping) as less common or rare effects associated with Meropenem.


Q: Can Меронем be given to pregnant or breastfeeding women?

A: For pregnancy, use is generally considered only when the potential benefit is judged to outweigh the potential risk, as human data on use are limited or inconclusive. For breastfeeding, Meropenem is reported to be excreted in human milk, and official documentation advises that a decision must be made whether to stop breastfeeding or stop the medication.


Q: Are there special warnings for older adults using Меронем?

A: Older adults are more likely to have age-related impaired kidney function. Because Meropenem is eliminated by the kidneys, official documents state that caution is advised, and a dosage adjustment may be required if renal function is impaired.


Q: Is a pre-existing neurological condition a concern when using Меронем?

A: Yes, official warnings state that Meropenem should be used with caution in patients with pre-existing Central Nervous System (CNS) disorders. This population has a greater documented risk of seizures or other adverse CNS effects during treatment.


Q: How is the use of Меронем different from generic meropenem?

A: Meropenem is the active ingredient in both the brand-name product (Меронем) and its generic versions. Regulatory agencies require generic products to contain the same active ingredient and meet the same quality and clinical equivalence standards for use as the brand-name drug.


Q: Do children need a different type of monitoring compared to adults while on Меронем?

A: Official regulatory documents define different, weight-based dosing for children, which reflects the differences in how the drug is processed in their bodies. This highlights the need for careful observation and potential adjustment based on the clinical response in the pediatric population.

How should Меронем be stored and disposed of?

How to Store and Dispose of Meropenem

The storage and disposal of Meropenem (powder for solution) must strictly follow official regulatory guidelines.

Storage Requirements

  • Unreconstituted Powder: The powder for injection should be stored at or below 30 C.
  • Child Safety: This medicine must be kept out of the sight and reach of children.
  • Prepared Solution: The reconstituted solution must not be frozen.
  • Stability: The usable life of the solution after mixing varies critically based on the diluent. Solutions prepared with 5% Dextrose should be used immediately (e.g., within 30 minutes), while those prepared with 0.9% Sodium Chloride have a longer stability period under refrigeration.

Disposal Instructions

Any unused Meropenem product or waste material must be disposed of in accordance with local requirements. The medicine should not be thrown away with household trash or wastewater to ensure adherence to pharmaceutical waste regulations.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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