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Orbactiv

Active Substance: oritavancin diphosphate
Common Name: oritavancin
ATC Code: J01XA05
Marketing Authorisation Holder: The Medicines Company UK Ltd
Active Substance: oritavancin diphosphate
Status: Authorised
Authorisation Date: 2015-03-19
Therapeutic Area: Soft Tissue Infections Skin Diseases, Bacterial
Pharmacotherapeutic Group: Antibacterials for systemic use

Therapeutic Indication

Orbactiv is indicated for the treatment of acute bacterial skin and skin structure infections (ABSSSI) in adults.

Consideration should be given to official guidance on the appropriate use of antibacterial agents.

What is Orbactiv and what is it used for?

Orbactiv is an antibiotic used in adults to treat acute (short-term) bacterial infections of the skin and of skin structures (tissue below the skin) such as cellulitis (inflammation of the deep skin tissue), skin abscesses and wound infections. It contains the active substance oritavancin.

Before using Orbactiv, doctors should consider official guidance on the appropriate use of antibiotics.

How is Orbactiv used?

Orbactiv is available as a powder to be made up into a solution for infusion (drip) into a vein and can only be obtained with a prescription. The recommended dose is a single infusion of 1,200 mg over three hours.

How does Orbactiv work?

The active substance in Orbactiv, oritavancin, is a type of antibiotic called a glycopeptide. It works by preventing certain bacteria from making their own cell walls, thereby killing the bacteria. Orbactiv has been shown to work against bacteria (such as methicillin resistant Staphylococcus aureus (MRSA)) for which standard antibiotics do not work. A list of bacteria against which Orbactiv is active can be found in the summary of product characteristics (also part of the EPAR).

What benefits of Orbactiv have been shown in studies?

Orbactiv, given as a single infusion, was compared with a 7 to 10-day treatment with vancomycin (another glycopeptide) in two main studies involving a total of around 1,959 patients with acute bacterial infections of the skin and of skin structures, such as cellulitis, skin abscesses and wound infections. These also included infections caused by MRSA.

In both studies, the main measure of effectiveness was the number of patients who responded within 3 days of starting treatment with an improvement in their skin in the infected area, lack of fever and no need for additional antibiotic. The study also looked at the number of patients whose infection was cured after treatment.

Orbactiv was at least as effective as vancomycin at treating the infection: 80.1% of patients treated with Orbactiv in the first study and 82.3% in the second study responded to treatment, compared with 82.9% and 78.9% respectively of patients treated with vancomycin. In addition, 82.7% of patients treated with Orbactiv in the first study and 79.6% in the second study were cured, compared with 80.5% and 80.0% respectively of patients treated with vancomycin.

What are the risks associated with Orbactiv?

The most common side effects with Orbactiv (which may affect 5 people or more in 100) are nausea (feeling sick), hypersensitivity (allergy) reactions or reactions at the site of infusion and headache. The most common side effects that resulted in treatment being stopped were cellulitis and osteomyelitis (bone infection).

Patients who have received Orbactiv must not be given an infusion of unfractionated heparin (a medicine used to prevent blood clots) for 120 hours after the infusion of Orbactiv. For the full list of all side effects and restrictions with Orbactiv, see the package leaflet.

Why is Orbactiv approved?

The Agency’s Committee for Medicinal Products for Human Use (CHMP) decided that Orbactiv’s benefits are greater than its risks and recommended that it be approved for use in the EU. The CHMP considered that Orbactiv, which can be given as a single dose, could be a valuable alternative treatment option for acute bacterial infections of the skin and of skin structures. Although Orbactiv’s safety profile overall is similar to that of other glycopeptides, the CHMP noted that some side effects occurred more frequently such as abscesses and bone infections. The CHMP considered that these side effects were manageable and adequately addressed in the product information.

What measures are being taken to ensure the safe and effective use of Orbactiv?

A risk management plan has been developed to ensure that Orbactiv is used as safely as possible. Based on this plan, safety information has been included in the summary of product characteristics and the package leaflet for Orbactiv, including the appropriate precautions to be followed by healthcare professionals and patients.

Further information can be found in the summary of the risk management plan.

Other information about Orbactiv

The European Commission granted a marketing authorisation valid throughout the European Union for Orbactiv on 19 March 2015.

For more information about treatment with Orbactiv, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist.

Source: European Medicines Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.

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