Which of the following is a common adverse drug reaction of Valsartan?

Valsartan is an angiotensin II receptor antagonist primarily used to treat high blood pressure and heart failure. One of the common adverse effects associated with this medication is dizziness. This side effect results mainly from the drug's action in lowering blood pressure, which can lead to a temporary drop in cerebral perfusion when a patient stands up or changes position rapidly. Patients might experience lightheadedness or dizziness, particularly when starting the medication or increasing the dose.

While nausea, insomnia, and headache can also occur with various medications, they are not as frequently reported specifically with Valsartan as dizziness. Understanding that dizziness is a notable side effect helps in monitoring patient responses and providing guidance on safety measures, such as standing up slowly to minimize the risk of falls.