Gencor, the company that makes Testofen, has published human clinical trials that shoe the fenugreek extract boosts testosterone dramatically.

Improves libido and erectile dysfunction (rat)
Has anabolic and androgenic effects (rat)
Increases bio-available free testosterone (human)

You will be very pleased with my results of taking tongat ali, especially the LJ100.  I have experienced tremendous improvements in tone and overall body mass. Above I linked the Wikipedia page that is actually very informative.
A big “side effect” that I have personally noticed is an increased sex drive. LJ100 ™ is an extremely [...]

Age-dependent effects of testosterone in experimental stroke
This research was funded by US Public Health Service grants NS049210 and NS33668 and American Heart Association Grant 0825526G.
Jian Cheng1, Weidong Hu2, Thomas J Toung2, Zhizheng Zhang1, Susan M Parker1, Charles E Roselli1,3 and Patricia D Hurn1,3,4

1Department of Anesthesiology and Peri-Operative Medicine, Oregon Health and Science University, Portland, Oregon, [...]

Testosterone Replacement Therapy
Testosterone Replacement Therapy
Testosterone replacement should in theory approximate the natural, endogenous production of the hormone. The average male produces 4-7 mg of testosterone per day in a circadian pattern, with maximal plasma levels attained in early morning and minimal levels in the evening.8 However, the subtleties of pulsatile and diurnal rhythms are potentially [...]

Estrogen, Testosterone May Affect Atherosclerosis
Doctors may eventually check sex hormones to assess heart disease risk
By David March
Johns Hopkins Medicine
Naturally produced sex hormones may influence the risk and progression of atherosclerosis, or hardening of the arteries, Johns Hopkins researchers report in a recent study. The findings may help explain the [...]

What is testosterone?
Testosterone is a substance produced in the testes and in the adrenal glands that helps to build protein and is essential for normal sexual behaviour and the development of masculine characteristics such as a deep voice, broad shoulders, and hair growth.
It also affects many metabolic activities, such as production of blood cells in [...]

Testofen® is a not-so-well-known herb… but it’s become quite an underground sensation for many European bodybuilders. It contains a variety of powerful anabolic compounds, among them Protodioscin and Steroidal Saponins.
Unlike other natural testosterone-boosting herbs, Testofen® contains a host of active compounds in addition to Protodioscin and Saponins—all responsible for significantly boosting Testosterone levels, muscle mass, [...]