Irbegen belongs to a group of medicines known as angiotensin-II receptor antagonists. Angiotensin-II is a substance produced in the body which binds to receptors in blood vessels causing them to tighten.
This results in an increase in blood pressure. Irbegen prevents the binding of angiotensin-II to these receptors, causing the blood vessels to relax and the blood pressure to lower.
Irbegen slows the decrease of kidney function in patients with high blood pressure and type 2 diabetes.