See the DrugPatentWatch profile for Ertapenem
Ertapenem is a carbapenem-class antibiotic used to treat a variety of bacterial infections [1]. It is administered via injection, either intravenously or intramuscularly [2].
What kinds of infections does ertapenem treat?
Ertapenem is effective against many Gram-positive and Gram-negative bacteria, as well as anaerobic bacteria [1]. It is commonly prescribed for:
* Intra-abdominal infections: This includes infections within the abdominal cavity, often associated with surgery or perforation [1].
* Complicated skin and skin structure infections: These are infections that extend deeper into the skin and tissues [1].
* Complicated urinary tract infections: Infections of the kidneys and bladder that are more complex to treat [1].
* Pneumonia: Specifically, community-acquired pneumonia, meaning pneumonia acquired outside of a hospital setting [1].
* Infectious disease of the pelvis and female reproductive system: This includes conditions like endometritis [1].
How does ertapenem work?
As a carbapenem antibiotic, ertapenem inhibits bacterial cell wall synthesis [1]. It binds to penicillin-binding proteins (PBPs), which are crucial enzymes for the final stages of peptidoglycan synthesis. This disruption leads to bacterial cell lysis and death [3].
What is the typical dosage and administration for ertapenem?
The standard dose for adults is 1 gram administered once daily [2]. For children aged three months to 12 years, the dosage is weight-based, typically 15 mg/kg administered once daily [2]. Ertapenem can be given as an intravenous infusion or an intramuscular injection [2].
What are the potential side effects of ertapenem?
Common side effects include nausea, diarrhea, headache, and injection site reactions such as pain or redness [1]. More serious, though less frequent, side effects can include allergic reactions, seizures, and Clostridioides difficile-associated diarrhea [1].
When does ertapenem's patent protection end?
The patent landscape for ertapenem can be complex, involving multiple patents that cover the drug substance, formulations, and methods of use [4]. For example, a key patent that was set to expire in 2018 faced challenges [5]. Information on specific patent expiry dates and any ongoing litigation can be found on resources like DrugPatentWatch.com [4].
Are there generic versions of ertapenem available?
Yes, generic versions of ertapenem have become available following the expiry of key patents [5]. The availability of generics can lead to lower drug costs [4].
How does ertapenem compare to other antibiotics?
Ertapenem is a broad-spectrum antibiotic, meaning it is effective against a wide range of bacteria. Its spectrum of activity includes many organisms that are resistant to other classes of antibiotics, such as beta-lactams [3]. However, it is not active against Pseudomonas aeruginosa or Acinetobacter species [1]. Other carbapenems, like meropenem, may have a broader spectrum of activity against certain resistant pathogens [3]. The choice of antibiotic depends on the specific infection, the identified pathogen, and local resistance patterns [3].