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U.S. Department of Health and Human Services

For Consumers

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Pegasys (peginterferon alfa-2a) new disposable autoinjector

On September 29, 2011, the Food and Drug Administration approved a135 mcg/0.5ml and 180 mcg/0.5 ml disposable autoinjector (DAI) to administer Pegasys (peginterferon alfa-2a), an antiviral indicated for treatment of Chronic Hepatitis C (CHC), by subcutaneous injection.

Pegasys continues to be available in a vial or prefilled syringe, and now also a 135 mcg/0.5ml and 180 mcg/0.5 ml PEGASYS disposable autoinjector. The package insert and the Medication Guide have been updated to provide new instructions for use for the DAI, and to the update with information related to the disposable autoinjector.

Because the autoinjectors are designed to deliver the full content, autoinjectors should only be used for patients who need the full dose (180 or 135 mcg). If the required dose is not available in an autoinjector, prefilled syringes, or vials should be used to administer the required dose. The autoinjector is for subcutaneous administration only.

The updated label and Medication Guide can be found on the FDA web site at http://www.accessdata.fda.gov/drugsatfda_docs/label/2011/103964s5204lbl.pdf

Pegasys is a product of Hoffmann-La Roche, Nutley, NJ.


Richard Klein
Office of Special Health Issues
Food and Drug Administration

Kimberly Struble
Division of Antiviral Drug Products
Food and Drug Administration