What are the potential side effects of peginterferon alfa-2a ?

Talk to your doctor!: Some of the common side effects of Pegasys (peginterferon alfa 2a) (peg-interferon alfa-2a) are fatigue, depression, headache, fever, low white cell count, muscle pain and chills. However, there are potentially more serious side effects as well. The risk of developing side effects may depend on your other health problems. You should talk to your doctor.

Common sideceffects: Common side effects of Pegasys include: flu-like symptoms (fever, chills, feeling very hot or very cold, muscle aches, fatigue, headache, muscle or joint pain, nausea, vomiting, stomach pain, cough), dry mouth, loss of appetite, weight loss, trouble sleeping (insomnia), diarrhea, dry skin, temporary hair loss,