I kliniske undersøgelser foretaget i en lang række indikationer og i et bredt dosisområde (fra 6 MIE/ m2/ uge ved hårcelleleukæmi op til 100 MIE/ m2/ uge ved melanom) var de mest almindeligt rapporterede bivirkninger feber, træthed, hovedpine og myalgi.
In clinical trials conducted in a broad range of indications and at a wide range of doses (from 6 MIU/m2/week in hairy cell leukaemia up to 100 MIU/m2/week in melanoma), the most commonly reported undesirable effects were fever, fatigue, headache and myalgia.