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Pegasys (pegylated interferon)

By Mark Cichocki, R.N., About.com

Updated: November 30, 2008

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What is Pegasys?:

Pegasys is a specially formulated interferon that allows the user to be dosed much less often than traditional interferon.

Form:

Subcutaneous injection

Dosage:

  • If used alone the dose is 180mcg once each week for 48 weeks.
  • If used in combination with ribavirin (Copegus, Rebetol), the dose is 180mcg each week.

Side Effects to Report to Your Doctor:

  • Life threatening or fatal events such as depression, suicide, relapse of drug abuse or overdose, and bacterial infections.
  • Psychiatric reactions such as depression, irritability, and anxiety.
  • "Flu-like symptoms such as lethargy, fatigue, and headache.
  • Skin disorders
  • Gastrointestinal disorders

Who Shouldn't Take Pegasys?:

  • Previous allergy to Pegasys or its components.
  • People with autoimmune hepatitis
  • Women who are pregnant.
  • Men whose female partners are pregnant.

For More Information:

For more information about Pegasys try About.com's Drug Finder.

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