Reuters further reported that more research was needed in order to confirm the findings. In his article Crary talked about the fact that some people have unrealistic expectations in respect to Viagra. It does not fix the broader, more complex emotional problems within a couple. Viagra doesn't replace communication. It could make things worse.
Some men apparently respond well in the beginning but later require increasingly higher doses.
Gina Kolata wrote in the New York Times in March 1998 when Viagra first got FDA approval that it helped 70 to 80 percent of the impotent men who tried it. Two years later on the Viagra Website it reports that it helps 82 per cent or four out of five couples who try it. There have also been studies done to see if Viagra can help postmenopausal women with sexual dysfunction. The first peer-reviewed study was published in the March 99 issue of Urology. The results of that study indicated that Viagra did not improve sexual function in most women but there was some improvement in a few cases.