A newer form of the medicine that dissolves on the tongue might work faster than the pill that you swallow. Oral medicine for ED also might not be safe or work well if you have: Very low blood pressure, called hypotension, or uncontrolled high blood pressure, called hypertension. Its effects might last longer if you have mild to moderate ED. Sildenafil or Viagra Viagra started life as a drug to treat hypertension, or high blood pressure. An inherited eye disease that affects the retina. These are commonly prescribed for an enlarged prostate or male pattern baldness.Turkiye forums Istanbul forum Istanbul forums KhanKhan Level Contributor 16 posts Viagra Non Prescribed Taksim Square? 5 years ago Save Hellow Beautiful n Brave . Sildenafil (or Viagra) Viagra started life as a drug to treat hypertension, or high blood pressure. But it was also shown to produce vasodilation (or the widening of blood . In fact, a recent review of studies found that some counterfeit drugs contained a very high, dangerous level of sildenafil that far exceeded a typical prescription dosage. In .