Hepatitis C Home > Pegasys Dosing

A healthcare provider may recommend Pegasys® (peginterferon alfa-2a) to people with chronic hepatitis B or C infections. Specifically, this drug is approved for treating hepatitis B infections in adults, and hepatitis C infections in adults and children as young as five years old. Dosing guidelines for Pegasys will vary, depending on several factors, such as:
  • Your age
  • Your weight (and height for children)
  • How well your kidneys are functioning.
This medicine comes as an injection that is given just under the skin every week for 24 or 48 weeks. Pegasys comes in a vial, a prefilled syringe, or an autoinjector. All forms are for a single use only. Any unused portion must be discarded; it cannot be saved for later.
(For more information, click Pegasys Dosage. This full-length article covers specific Pegasys dosing guidelines, as well as details on how these injections are given and how to use the medicine properly.)
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Last reviewed by: Kristi Monson, PharmD;
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