No, don't know about sperm count but I did hear on the radio, not sure of the program, that a research doctor has been able to cause a stroke in rats and also able to stop the stroke using the chemical in Viagra, so who know what it will do. I am in my senior years and all I can say is it gives me a fantastic "Hard ON" that hangs around for quite a while and I feel the climax is a lot better than even my younger days
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