What side effect is most likely to occur with terazosin?

Terazosin is an alpha-1 adrenergic blocker primarily used to treat hypertension and benign prostatic hyperplasia (BPH). A common side effect associated with terazosin is dizziness, which often results from its vasodilatory effects. The medication can lead to a decrease in blood pressure, particularly when a patient stands up quickly, which can cause orthostatic hypotension. This drop in blood pressure may result in dizziness or lightheadedness.

Dizziness is particularly relevant in patients who have just started the medication or have had their dosage increased, as the body may need time to adjust to the changes in blood pressure. This side effect is important for patients to understand, especially because it can increase the risk of falls, particularly in the elderly. Recognizing the potential for dizziness is crucial in managing patient safety and ensuring that individuals are aware of this consequence when they start terazosin treatment.