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ABSTRACT
Introduction: Erectile dysfunction is an extremely frequent and extensively studied condition, currently affecting the lives of tens of millions of men around the globe. The extensive knowledge of its pathophysiology has led to the development of phosphodiesterase 5-inhibitors, which can facilitate sexual intercourse in a large number of patients. However, an ever-increasing number of patients is unresponsive to these drugs due to underlying comorbidities or previous surgery. Different molecular pathways need to be addressed to provide treatment for a larger patient population.
Areas covered: In this paper, we will review the underlying molecular pathways, discuss already available treatment options and their limitations and provide an overview of the newest therapeutics in development. Centrally and peripherally acting agents will be discussed separately. Additionally, newest advances in regenerative medicine options will be discussed.
Expert opinion: Even though novel drugs have not been tested in a phase III setting, several phase II clinical trial results are eagerly awaited. These newest therapeutics could be applied as monotherapy or combination therapy in the subset of patients unresponsive to traditional treatment options.
Declaration of interest
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
Reviewer Disclosures
Peer reviewers on this manuscript have no relevant financial or other relationships to disclose.