Combination therapies for improved management of lower urinary tract symptoms/benign prostatic hyperplasia

Several urological and nonurological conditions can contribute to the onset of lower urinary tract symptoms (LUTS), including benign prostatic hyperplasia (BPH), which is one of the main underlying causes in male patients. Six pharmacological classes (α-adrenoceptor blockers [ABs], 5α-reductase inhibitors [5ARIs], phytotherapeutics, antimuscarinics [AMs], β3-adrenoceptor agonists and phosphodiesterase type 5 inhibitors [PDE5Is]) are available, alone or in combination, for the treatment of male LUTS. The aim of this review is to summarize the latest evidence on combination medical treatments for male patients with LUTS/BPH. Standard combinations include AB + 5ARI (for patients with increased prostate volume who are at risk for BPH progression); AB + PDE5I (for patients with concomitant erectile dysfunction); and AB + AM or β3 agonist (for patients with persistent storage symptoms and not at risk for acute urinary retention). Other possible multidrug treatments have been proposed in preliminary studies, but further randomized controlled trials are needed to determine whether these putative strategies will eventually be considered a new standard for patients with LUTS/BPH. The possibility of tailoring BPH treatment according to different patient characteristics and expectations, using two or more drugs, seems a promising path in the field of LUTS/BPH management; however, physicians should consider the risk of increasing costs without proven long-term efficacy with most of these combination treatments.