Oritavancin: Side Effects and Mechanism of Action

Oritavancin side effects


Oritavancin is an antibacterial agent used to treat acute bacterial skin and skin structure infections caused by susceptible Gram-positive bacteria. Will also give light on oritavancin side effects at the end of this article.

Oritavancin is a glycopeptide antibiotic used for the treatment of skin infections. It was developed by The Medicines Company (acquired by Novartis). Oritavancin was initially approved by the FDA in 2014 and formulated to combat susceptible gram-positive bacteria that cause skin and skin structure infections. It boasts the option of single-dose administration and has been proven as non-inferior to a full course of vancomycin therapy.

What is Oritavancin used for?

Oritavancin is indicated for the treatment of adult patients with acute bacterial skin and skin structure (including subcutaneous) infection. It is used for confirmed/suspected infections with designated and susceptible gram-positive organisms. There are two preparations of oritavancin; the 400 mg dose that is administered over 3 hours, and the 1200 mg dose administered over 1 hour. Both are indicated for susceptible gram-positive skin and skin structure infections in adults

How does this medicine work?

The cell wall is vital for the survival and replication of bacteria, making it a primary target for antibiotic therapy. Oritavancin works against susceptible gram-positive organisms via three separate mechanisms. Firstly, it binds to the stem peptide of peptidoglycan precursors, inhibiting transglycosylation (polymerization). This process normally occurs during cell wall synthesis. Secondly, oritavancin inhibits crosslinking during bacterial cell wall biosynthesis via binding to cell wall pentaglycyl peptide bridging segments. Finally, this drug also acts by disrupting the bacterial cell membrane, interfering with its integrity, which eventually leads to cell death by various mechanisms.

Oritavancin interferes with bacterial cell wall synthesis and integrity, treating susceptible skin and subcutaneous tissue infections with gram-positive bacteria. This drug is known to artifically increase INR and aPTT, interfering with coagulation testing. Cases of infusion reactions have also been reported

How Does the body get rid of the medicine?

Oritavancin is excreted as unchanged drug in both the urine and feces. Less than 5% has been recovered in the urine, and 1% has been recovered in the feces

Oritavancin side Effects

 Not yet much information from the users .However, an overdose is likely to result in an increased risk of side effects, such as:
  •  headache, 
  • nausea vomiting, 
  •  diarrhea.
 This drug is not dialyzable, and in the case of an overdose, supportive measures should be undertaken

Which other drugs interact with oritavancin?

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