Given the clinical success and worldwide publicity for erectile dysfunction treatment and then the adverse cardiac reactions, mostly heart failure, in some patients, clinicians began to worry about the safety of the new drugs currently available to the public. Graham Jackson, a well-known expert and lecturer on cardiac problems and erectile dysfunction, provides the reader with straightforward guidelines on the pharmacological, social and sexual benefits of correct dosing in various types of patient groups. General practitioners, cardiologists, and specialists in sexual dysfunction will find this volume a welcome reference.