There are countless references in medical literature detailing the binding of the winny molecule to the prog. rec. and the impact it has on prog. sides from other steroids. Its true that it is an effective anti-prog...you might want to peruse the Steroid Journal or the New England Journal of Medicine, just to name a couple. They are easily accessed for free online. Additionally, there is more than one way to combat the so-called deca dick syndrome that can result from tren. While test is a sure fire approach, there are some concerns that you apparently have regarding that solution. Alternatives would include proviron, arimidex, chaste berry extract, viagra, and even horny goat weed. I have used all of them with varying degrees of success while on different cycles. Test works best, even at the paltry dose of 200mg/week, where there are hardly any sides at all in virtually anyone. In fact, if that dosage results in negative sides for you, the question of the safety of any steroid therapy is one you should reconsider altogether. Not only does test rectify the reduced libido problem, it can also counteract the negative moods that you indicated are a side effect of tren for you. I personally will always include a small dose of cyp (200mg/week) with my tren cycles, as well as winny in as high of a dose as I can financially withstand for as long as I cycle the tren, which tends to be eight to ten weeks at this point. I use 150mg of tren every day, and starve myself while on it. This results in an insane muscular density and leanness that I have found to be otherwise impossible to achieve. Tren is the shit as far as I am concerned. Incidentally, I have yet to find any literature at all that shows scientific evidence of the belief that tren is hard on the kidneys. In fact, even at 150 ED my tests revealed only a slightly elevated BP and hematocrit, with virtually no changes in liver values, even when the winny was present at 50mg ED, although the addition of winny did have some impact on the levels when first added. I suspect the winny is primarily responsible for the increased hematocrit as well, although I can see where tren alone could potentially raise that number without sufficient water intake. Do yourself a favor and use test and winny with tren. It really does maximize the benifit of the drug while minimizing the negative aspects of it.