Review medicine.

On the amount spent by the forces and means for testing a new drug company Pfizer, probably a record. Judge for yourself. The drug “Viagra” evaluated more than 3000 men aged 19 to 87 years in studies of erectile dysfunction, held all over the world. The duration of erection disorders in these patients was on average 5 years (6 months to 26 years), and erectile disorder has been organic, psychogenic and mixed organic and psychogenic etiology. The results of these studies indicate that the drug “Viagra” is effective for restoration of erectile function and improve the performance of successful intercourse with a large number of patients, including at a number of diabetic patients with spinal cord injuries and other associated clinical conditions as well as patients , host at the same time a number of medicines. The drug “Viagra” is valid in response to a natural sexual stimulation to restore erectile function. On the resulting normalization erection therapy reported 70-90% of patients taking the drug “Viagra”, and only 10-30% of patients receiving a placebo (dummy). Doses of the drug “Viagra” from 50 to 100 mg of well-tolerated and highly effective to restore erectile function in studies in which the dosage can be adjusted depending on its efficacy and tolerability (e.g., in studies with a flexible change in dosage). The results of more than 550 patients treated for at least 1 year, very convincingly show that the effectiveness of the drug “Viagra” persisted for a long-term care.