Reasons for inclusion

• You are male and over the age of 18 years, presenting with erectile dysfunction

Reasons for exclusion

• All medicines are contraindicated in those who have had hypersensitivity to the active ingredient, or to any of the excipients
• Men for whom sexual activity is inadvisable
• Men who have loss of vision in one eye because of non-arteritic anterior ischaemic optic neuropathy (NAION), regardless of whether this episode was in connection or not with previous
• PDE5 inhibitor exposure
• You have a severe hepatic impairment
• You have a known hereditary degenerative retinal disorders such as retinitis pigmentosa (a minority of these patients have genetic disorders of retinal phosphodiesterases)
• The film coating of the tablet contains lactose. SIldenafil should not be administered to men with rare hereditary problems of galactose intolerance, Lapp lactase deficiency or glucose-galactose malabsorption
• Patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis or Peyronie’s disease), or patients who have conditions which may predispose them to priapism (such as sickle cell anaemia, multiple myeloma or leukaemia)
• You are using other treatments for erectile dysfunction
• These medicines potentiate the hypotensive effects of nitrates, and their co-administration with nitric oxide donors (such as amyl nitrite), or nitrates in any form is therefore contraindicated;
• You are under 18
• You are female
• You have any cardiovascular disorders, including angina, heart failure, history of stroke and/or myocardial infarction, arrhythmias, hypotension (<90/50mmHg), or hypertension;
• You are taking nicorandil or ritonavir
• You are male with bleeding disorders or active peptic ulceration
• You have no valid consent