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Meropenem

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Meropenem
Meropenem.svg
Meropenem-from-xtal-1992-3D-balls.png
Clinical data
Trade names Merrem, others
AHFS/Drugs.com Monograph
License data
Pregnancy
category
  • AU: B2
Routes of
administration
Intravenous
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • UK: POM (Prescription only)
  • US: ℞-only
Pharmacokinetic data
Bioavailability 100%
Protein binding Approximately 2%
Elimination half-life 1 hour
Excretion Kidney
Identifiers
  • (4R,5S,6S)-3-(((3S,5S)-5-(Dimethylcarbamoyl)pyrrolidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
PDB ligand
CompTox Dashboard (EPA)
ECHA InfoCard 100.169.299
Chemical and physical data
Formula C17H25N3O5S
Molar mass 383.46 g·mol−1
3D model (JSmol)
  • O=C3N2\C(=C(\S[C@H]1C[C@@H](C(=O)N(C)C)NC1)[C@H](C)[C@@H]2[C@H]3[C@H](O)C)C(=O)O
  • InChI=1S/C17H25N3O5S/c1-7-12-11(8(2)21)16(23)20(12)13(17(24)25)14(7)26-9-5-10(18-6-9)15(22)19(3)4/h7-12,18,21H,5-6H2,1-4H3,(H,24,25)/t7-,8-,9+,10+,11-,12-/m1/s1 checkY
  • Key:DMJNNHOOLUXYBV-PQTSNVLCSA-N checkY
  (verify)

Meropenem, sold under the brand name Merrem among others, is an intravenous β-lactam antibiotic used to treat a variety of bacterial infections. Some of these include meningitis, intra-abdominal infection, pneumonia, sepsis, and anthrax.

Common side effects include nausea, diarrhea, constipation, headache, rash, and pain at the site of injection. Serious side effects include Clostridioides difficile infection, seizures, and allergic reactions including anaphylaxis. Those who are allergic to other β-lactam antibiotics are more likely to be allergic to meropenem as well. Use in pregnancy appears to be safe. It is in the carbapenem family of medications. Meropenem usually results in bacterial death through blocking their ability to make a cell wall. It is more resistant to breakdown by β-lactamase producing bacteria.

Meropenem was patented in 1983. It was approved for medical use in the United States in 1996. It is on the World Health Organization's List of Essential Medicines. The World Health Organization classifies meropenem as critically important for human medicine.

Medical uses

The spectrum of action includes many Gram-positive and Gram-negative bacteria (including Pseudomonas) and anaerobic bacteria. The overall spectrum is similar to that of imipenem, although meropenem is more active against Enterobacteriaceae and less active against Gram-positive bacteria. It works against extended-spectrum β-lactamases, but may be more susceptible to metallo-β-lactamases. Meropenem is frequently given in the treatment of febrile neutropenia. This condition frequently occurs in patients with hematological malignancies and cancer patients receiving anticancer drugs that suppress bone marrow formation. It is approved for complicated skin and skin structure infections, complicated intra-abdominal infections and bacterial meningitis.

In 2017, the U.S. Food and Drug Administration (FDA) granted approval for the combination of meropenem and vaborbactam to treat adults with complicated urinary tract infections.

Administration

Meropenem is administered intravenously as a white crystalline powder to be dissolved in 5% monobasic potassium phosphate solution. Dosing must be adjusted for altered kidney function and for haemofiltration.

As with other β-lactams antibiotics, the effectiveness of treatment depends on the amount of time during the dosing interval that the meropenem concentration is above the minimum inhibitory concentration for the bacteria causing the infection. For β-lactams, including meropenem, prolonged intravenous administration is associated with lower mortality than bolus intravenous infusion in persons with whose infections are severe, or caused by bacteria that are less sensitive to meropenem, such as Pseudomonas aeruginosa.

Side effects

The most common adverse effects are diarrhea (4.8%), nausea and vomiting (3.6%), injection-site inflammation (2.4%), headache (2.3%), rash (1.9%) and thrombophlebitis (0.9%). Many of these adverse effects were observed in severely ill individuals already taking many medications including vancomycin. Meropenem has a reduced potential for seizures in comparison with imipenem. Several cases of severe hypokalemia have been reported.

Interactions

Meropenem rapidly reduces serum concentrations of valproic acid. As a result, people who use valproic acid for epilepsy are at increased risk of seizures during treatment with meropenem. In situations where the use of meropenem cannot be avoided, prescription of an additional anticonvulsant should be considered.

Pharmacology

Mechanism of action

Meropenem is bactericidal except against Listeria monocytogenes, where it is bacteriostatic. It inhibits bacterial cell wall synthesis like other β-lactam antibiotics. In contrast to other beta-lactams, it is highly resistant to degradation by β-lactamases or cephalosporinases. In general, resistance arises due to mutations in penicillin-binding proteins, production of metallo-β-lactamases, or resistance to diffusion across the bacterial outer membrane. Unlike imipenem, it is stable to dehydropeptidase-1, so can be given without cilastatin.

In 2016, a synthetic peptide-conjugated PMO (PPMO) was found to inhibit the expression of New Delhi metallo-beta-lactamase, an enzyme that many drug-resistant bacteria use to destroy carbapenems.

Society and culture

Meropenem vial

Trade names

Trade names
Country Name Maker
India UNOMERO Scutonix Lifesciences, Bombay
India Inzapenum Dream India
Aurobindo Pharma
Penmer Biocon
Meronir Nirlife
Merowin Strides Acrolab
Aktimer Aktimas Biopharmaceuticals
Neopenem Neomed
Mexopen Samarth life sciences
Meropenia SYZA Health Sciences LLP
Ivpenem Medicorp Pharmaceuticals
Merofit
Lykapiper Lyka Labs
Winmero Parabolic Drugs
Bangladesh
Meroject Eskayef Pharmaceuticals Ltd.
Merocon Beacon Pharmaceuticals
Indonesia Merofen Kalbe
Brazil Zylpen Aspen Pharma
Japan, Korea Meropen
Australia Merem
Taiwan Mepem
Germany Meronem
Nigeria Zironem Lyn-Edge Pharmaceuticals
Ukraine Meropenem Lekhim-Kharkiv
Panlaktam (Panlaktam) "Darnytsia"
Mepenam Kyivmedpreparat
Merobicide Borshchahiv HFZ
US Meronem AstraZeneca
... Merosan Sanbe Farma
Merobat Interbat
Zwipen
Carbonem
Ronem Opsonin Pharma, BD
Neopenem
Merocon Continental
Carnem Laderly Biotech
Penro Bosch
Meroza German Remedies
Merotrol Lupin)
Meromer Orchid Chemicals
Mepenox BioChimico
Meromax Eurofarma
Ropen Macter
mirage adwic
Meropex Apex Pharma Ltd.
Merostarkyl Hefny Pharma Group

External links

  • "Meropenem". Drug Information Portal. U.S. National Library of Medicine.

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