As conducted clinical trials of drugs?
According to the amount spent force and the means to test new drugs company Pfizer, perhaps a record. Judge for yourselves.
The product “Viagra” evaluated more than 3,000 men aged 19 to 87 years in erektilnyh dysfunction studies conducted throughout the world. The duration of the violations erektsy these patients averaged 5 years (from 6 months to 26 years), a penis was an organic disorder, psychogenic and mixed organic and psychogenic etiology. The results of these studies show that the drug, “Viagra” is effective to restore erectile function and improve the performance of successful sexual acts with large numbers of patients, including a number of diabetics, with damage to the spinal cord, other related clinical conditions, as well as patients Taking the same time a number of medications. The product “Viagra” acted in response to natural sexual stimulation to restore erectile function. On tied therapy noomalizatsii Mature reported 70-90% of patients who took drug, “Viagra”, and only 10-30% of patients receiving placebo (pustyshku). Doses drug “Viagra” from 50 to 100 mg well tolerated and vysokoeffektivny to restore erectile function in studies in which drug dosage can be adjusted depending on its efficiency and Portability (for example, in studies with a flexible dosage change). The results of more than 550 studies of patients receiving treatment at least over a year, very convincingly show that the effectiveness of the drug “Viagra” persisted for a long treatment.