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Biotech / Medical : PFE (Pfizer) How high will it go?
PFE 25.79-0.9%Dec 8 3:59 PM EST
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To: Beverly-Joe who wrote (929)4/2/1998 6:12:00 PM
From: Perry   of 9523
 
I recall reading in the FDA documents that Viagra is not teratogenic in animals (rats) and just as important does not decrease sperm count. I know this information can be obtained on line from the FDA web site.

It should be stated that the number of species tested was not made clear in this report. This may be an issue, since you most likely know,thalidomide is not teratogenic in rodents but is extremely teratogenic in rabbits. I would hope that drug companies and the FDA have learned a valuable lesson from these earlier tragedies. Regardless, Viagra is taken by men and hence the drug would need to be tranferred to his partner through sexual intercourse. It is questionable if concentrations can be reached within the uterus that could be teratogenic. I have not come across any studies that demonstrate male-mediated birth defects, in this manner, although I do believe they exist. Can you relay some current studies?

Thanks and I hope this helps.
Perry
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