[Jessi]

In another thread on Opill I noted that there was a male contraceptive study that combined much larger doses of the more potent version of Norgestril (levo-norgestril) with testosterone replacement therapy. To decrease sperm while maintaining function, I suppose. No ill effects were reported, but I wonder how much of that had to do with the addition of T? 

The study I found was giving it to males at doses up to .5mg, daily, orally, along with 200mg of injected T. And not Norgestril, but levo-norgestril which acc'd to Wiki is the actual active form and twice as potent as Norgestril. [/size][/color]

So I have to wonder does the T make all the difference? Are are we being unnecessarily cautious? Because it sounds as if males were given the equivalent of a dozen Opills a day! 500ug ( of double potency levo-norgestril so 1mg norgrstril efficacy?) divided by the Opill's .075mg.  Am I missing something here? Besides the testosterone. And that's what I don't know. Does the added T confer safety? And just my assumption it's so the subjects didn't have erectile issues? Even counting things equal they were still taking 6ish times the 
Norgestril of the Opill. Unless my math is bad.