Alfosin XR 10 mg 30 Tablet Alfuzosin is used for: Alfuzosin can be used to treat the symptoms of Benign Prostatic Hypertrophy. It can cause problems in passing water (urine). This happens mainly in older men.Do not take Alfuzosin if You are allergic (hypersensitive) to Alfuzosin or any of the other ingredients of Alfuzosin. • You are taking another alpha-blocker. •You have something called orthostatic hypotension. •You have serious liver problems.