De mest almindelige bivirkninger ved Irbesartan Winthrop (set hos mellem 1 og 10 patienter ud af 100) er svimmelhed, kvalme eller opkastning, træthed, en forøgelse af kreatinkinaseindholdet i blodet (et enzym, der findes i musklerne).
The most common side effects with Irbesartan Winthrop (seen between 1 and 10 patients in a 100) are dizziness, nausea (feeling sick) or vomiting, fatigue (tiredness) and increases in blood creatine kinase levels (an enzyme found in muscles).