Sildenafil, or Viagra, is excreted Viagra as metabolites from the body in feces and urine. Yes, a small Viagra percentage of Viagra the study group experienced headaches, nausea, facial flushing, diarrhea, urinary tract infection and visual changes Viagra to color sensitivity. The main Viagra contraindication to prescribing Viagra are people who suffer from a rare Viagra disease, retinitis pigmentosa, or those who are on nitroglycerin or nitrous oxide. Recently, it has Viagra been reported that 16 Viagra patients have died. While there is no direct evidence that Viagra caused the deaths, readers should be aware that sexual Viagra activity increases cardiac risk.
Male impotence is often a side effect of more serious cardiovascular problems.
Viagra MUST NOT be taken by Viagra men who are on medications containing nitrates, such Viagra as nitroglycerine tablets, as this could lead to dangerous Viagra lowering of blood pressure. There is evidence to suggest Viagra that Viagra may interact with other medications in such Viagra a way as to increase health risk. Men who have medical Viagra conditions, such as sickle cell anemia, leukemia, or multiple myeloma, or those with abnormally-shaped penis should also not take Viagra because of a possibility of producing a sustained erection. No, Viagra should only Viagra be taken by prescription from a qualified physician. FDA Viagra regulations do not permit Viagra to be Viagra purchased without a physician's prescription.