https://blogs.mercola.com:443/sites/vitalvotes/archive/2004/04/05/Viagra-May-Cause-Infertility.aspxResearch from Britian shows that the famous impotence drug appears to impair sperm and reduce pregnancies in mice, in contrast to human studies, which have found no negative effects on fertility. Around 23 million men worldwide have taken Viagra sinceenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)