Sympathomimetic drugs are used in all of the conditions, except:
Erection is mediated parasympathetic stimuli, while ejaculation is under control of sympathomimetic agents. Thus sympathomimetic agents will not help in erectile dysfunction. Ref: Richard Finkel, Michelle Alexia Clark, Pamela C. Champe, Luigi X. Cubeddu (2009), Pharmacology, 4th Edition, Lippincott Williams and Wilkins Publications, United States Page 65 ; Principles of Anatomy and Physiology By Taora 10th Edition, Page 580
High blood pressure
Acute uncompensated cardiac failure
Low blood pressure
Erectile dysfunction