One combination that has been getting a great deal of attention these days by equally researchers as well as the press is Resveratrol (Res), which happens to be a phytoestrogen along with antioxidant derived from grapes. It's a compound which has been found to act as an anti estrogen, Inhibits aromatase (the enzyme which converts testosterone to estrogens) at high doses, might have effects on fat loss, and has lots of potential health associated benefits.
Thus far, the material seems to some wonder compound. Last but not least, recent studies also suggest it may increase testosterone levels, and that is got bodybuilders and other professional athletes, and also supplement companies, excited as an individual may expect.
A recent analysis getting a terrific deal of attention entitled "trans-Resveratrol relaxes the corpus cavernosum ex vivo and enhances testosterone Booster ashwagandha levels and sperm quality in vivo" found positive effects on testosterone levels in rabbits. This study discovered that rats given Res orally at 50 mg/ kg for 28 days concluded
"... resveratrol has a positive impact on male reproductive feature by triggering a penile erection and improving blood testosterone levels, testicular sperm counts, along with epididymal sperm motility." (1)
2 essential factors to remember: the analysis was done in rabbits and at very high doses. To find the dose utilized in the study as it holds true for you, which had been fifty mg/ kg, use the weight of yours in lbs divided by 2.2 X 50 = dose required according to this study...However, another study carried out in animals employed a dosage: 20 mg/(kg d) also had results on testosterone, to ensure that may be a good starting dose. It's not known of course in case this is the human equivalent dose (HED) and even what the HED is at this particular time frame to effect testosterone in humans and even if it'll!
Unfortunately, no conclusive human studies exist only at that moment, thus the "optimal" dose is a WAG at the moment. Nonetheless, anecdotal stories of people using 500mg - 1000mg report positive effects, although it's far from clear what effects men and women can expect from these doses of Res, but taking a look at all the various other possible health advantages of Res, it might be well worth trying.
Shin S, Kim JC, Nahm SS, Joo SS, Choi BH, Choi JH, Jang MJ, Park D, Jeon JH, Kim YB. Arch Pharm Res. 2008 Jan;31(1):83-7