Sildenafil comes as a tablet and suspension liquid to take by mouth. Percentage of Patients Reporting an Improvement in Erections. Follow your doctor’s orders or the directions on the label. Angina severe chest pain , unstable or Arrhythmia irregular heartbeat, within the last 6 months or Blood vessel problems eg, aortic stenosis, idiopathic subaortic stenosis or Heart attack within the last 6 months or Heart failure or Hypertension high blood pressure or Hypotension low blood pressure or Retinal disorders eye problem or Retinitis pigmentosa an inherited eye disorder or Stroke within the last 6 months —Should not be used in patients with these conditions. The mean times adjusted for baseline to onset of limiting angina were Stick to the Indian version of Viagra, sold in Vietnam as Kamagra,as good as the original, I know dozens of people who have been using it for years with “success” and without any health effects, sold in HCM for $ a tely no reason to bring your grossly overpriced foreign Viagra in,unless of course you want to add even further to the assets .  · Viagra; Descriptions. Sildenafil is used to treat men who have erectile dysfunction (also called sexual impotence). Sildenafil belongs to a group of medicines called phosphodiesterase 5 (PDE5) inhibitors. These medicines prevent an enzyme called phosphodiesterase type-5 from working too quickly. The penis is one of the areas where . Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but .