Were you looking for information about Pegasys? Pegisis is a common misspelling of Pegasys.
If you have chronic hepatitis B or C infections, your healthcare provider may prescribe Pegasys® (peginterferon alfa-2a) to help activate your body's own response to fight these viruses. This medicine is approved for treating hepatitis C in adults and children as young as five years old, and hepatitis B in adults only.
It comes as an injection that is given just under the skin (subcutaneously) once a week for 24 to 48 weeks. Headaches, muscle aches, and fatigue are among the possible side effects.
(Click Pegasys for more information about how this medication works and when and how to use it, as well as general safety precautions you should be aware of before beginning treatment. You can also click any of the links in the box to the right for specific information.)