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Pegylated interferon(Pegasys, PEGIntron)

Pegylated interferon is a man-made form of interferon, a chemical naturally produced in the body to fight viruses. Interferon helps to stop the hepatitis C virus (HCV) from making new copies of itself. 

It also helps the immune system to kill HCV. Pegylated interferon is made with special add-on parts that help the drug stay in the body longer. It is injected once a week, while interferon that is not pegylated needs to be injected at least three times a week.

There are two brands of pegylated interferon: Pegasys and PEG-Intron. There are slight differences between the drugs, but both brands seem to work equally well and do not have major differences in side effects. 

Both are used in combination with ribavirin to treat Hepatitis C virus (HCV) infection. If left untreated, HCV infection can lead to serious liver disease such as cirrhosis, liver cancer or death...

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