SILDENAFIL (Viagra)
Ashok Sinha
Erectile dysfunction
- By mouth
Adult
Initially 50 mg, to be taken approximately 1 hour before sexual activity, adjusted according to response to 25–100 mg (max. per dose 100 mg) as required, to be taken as a single dose; maximum 1 dose per day.
Contra-indications
General contraindications:
Hereditary degenerative retinal disorders; history of non-arteritic anterior ischaemic optic neuropathy; recent history of myocardial infarction; recent history of stroke
Specific contraindications:
When used for erectile dysfunction:
avoid if systolic blood pressure below 90 mmHg (no information available); patients in whom vasodilation or sexual activity are inadvisable; recent unstable angina
Cautions
General cautions:
Active peptic ulceration; bleeding disorders; cardiovascular disease; left ventricular outflow obstruction
Specific cautions:
When used for erectile dysfunction:
with oral use for erectile dysfunction : anatomical deformation of the penis (e.g. angulation, cavernosal fibrosis, Peyronie's disease); predisposition to priapism (e.g. in sickle-cell disease, multiple myeloma, or leukaemia)