properties:
 Used to treat erectile dysfunction (ED).
 Used to treat enlarged prostate and reduce urinary obstruction.
 Take continuously every day.
 Caution:
 Do not use with nitrate drugs, such as heart medications, as this can cause dangerously low blood pressure.
 May cause headache, flushing, nasal congestion, or muscle pain.
 It should be taken at the same time each day when used to treat an enlarged prostate.