The most commonly reported side effects of peginterferon include fatigue, nausea, and anaemia, based on 81,975 FDA adverse event reports from 2004 to 2025.
Percentages show how often each reaction appears relative to total reports for peginterferon.
These are voluntary reports and do not establish that peginterferon caused these reactions.
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Other drugs that appear in adverse event reports alongside peginterferon. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.
Also suspected
Taken alongside
Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.
48.7% of peginterferon adverse event reports involve female patients and 45.8% involve male patients. The largest age group is adult at 86%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking peginterferon when the adverse event was reported.
Showing 15 of 496 indications
Peginterferon is sold under brand names including Sylatron, Pegasys, Plegridy.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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