De hyppigst observerede bivirkninger i alle kliniske studier hos patienter, som fik Avastin med eller uden kemoterapi, var hypertension, træthed eller asteni, diarré og abdominalsmerter.
The most frequently observed adverse drug reactions across clinical trials in patients receiving Avastin were hypertension, fatigue or asthenia, diarrhoea and abdominal pain.