What is a common side effect of Angiotensin II receptor blockers (ARBs)?

Dizziness is indeed a common side effect of Angiotensin II receptor blockers (ARBs). These medications work by blocking the effects of angiotensin II, a substance in the body that can constrict blood vessels and raise blood pressure. By doing so, ARBs help to relax blood vessels and lower blood pressure. However, this vasodilation can sometimes lead to a drop in blood pressure that may result in dizziness, especially when a person changes positions quickly, such as moving from sitting to standing. This side effect is often transient and may decrease as the body adjusts to the medication.

In contrast, the other choices like bradycardia, liver dysfunction, and insomnia are not typically associated with ARBs. Bradycardia is more closely related to other types of antihypertensive medications, liver dysfunction is not a common side effect of ARBs, and while insomnia can be a general side effect of many medications, it is not directly linked to ARBs. Thus, dizziness stands out as a more recognizable and relevant side effect in patients taking these medications.