Our product only uses Bulgarian Tribulus, being much higher in the bio active compound protodioscin. Only the Bulgarian grown tribulus bestows upon the user testosterone boosting and virility enhancing qualities that this product is known for.

How does it work?

Tribulus Terrestris stimulates the body to release lutenizing hormone, which then prompts the testes to produce more testosterone. This herb has the unique ability to elevate endogenous testosterone production whilst not suppressing it. This means that your overall base testosterone level will be permanently elevated.

What is Tongkat Ali?

Tongkat Ali is a herbal medicine, which has a direct effect on the testosterone level or the testosterone tone in the human body. Since testosterone drives sexual performance, Tongkat Ali has its stake in man’s sexual drive. But that does not necessarily mean that Tongkat Ali is not effective on women.
How Does Tongkat Ali affect Testosterone?

Tongkat Ali is popular for enhancing the sexual performance of males for hundreds of years. It has been used in many forms in the past and it is now available in more user-friendly forms.

Tongkat Ali has a direct impact on the body’s testosterone levels. Although the herb is a testosterone booster, it does not produce testosterone. The herb just help the body to produce testosterone more effectively and it also increases the strength, or in other words, the ‘tone’ of testosterone.

Tongkat Ali testosterone effect has been observed for many years when the modern science and technology started its own role in conducting researches on Tongkat Ali. Although it was not known as ‘testosterone’ the ancient wizards knew the effects made by Tongkat Ali on the body’s systems.

Researches have found the exact relationship between Tongkat Ali and testosterone by now. Scientists have conducted many experiments using rodents and observed many interesting observations.

Typically, the Tongkat Ali dose and the frequency have a direct effect on the testosterone levels of the rodent’s body. When the dose is quite high, the rodents have demonstrated high level of sexual activities as the result of high testosterone levels in the blood. The observation has been same for high frequency of the same dose of Tongkat Ali.

Once the user stops taking Tongkat Ali, the testosterone level goes down as a result of the body functions. Therefore, Tongkat Ali does not have a long term impact on boosting testosterone level in the body. Whenever someone needs to boost the testosterone level, the individual will have to take in Tongkat Ali and experience the effect within a couple of hours’ time. Tongkat Ali testosterone effects are considered healthy as there haven’t been any negative or strong side effects that were reported so far pertaining to the herbal medical world.


Note: CHP LABS Andro-Test is not a sole source of nutrition and should be used in conjunction with a nutritious diet and physical training or exercise program.
We recommend drinking 2 litres of water per day when using dietary supplements.

Not suitable for children under 15 years of age or pregnant women. Should only be used under medical or dietetic supervision.



Peer-Reviewed Professional Journals

·    Hamzah, S., et al.  The ergogenic effects of Eurycoma longifolia jack: a pilot study.  Br J Sports Med.  37:464-470, 2003.

Department of Exercise Physiology, Sports Centre, University of Malaya, Kuala Lumpur, Malaysia.

Eurycoma longifolia Jack (ELJ), which contains quassinoids such as eurycomalacton, eurycomanon, and eurycomanol, has been reported to have aphrodisiac properties and to increase testosterone levels in men.  Previous studies have established that the testosterone supplementation increases fat free mass, muscle strength, and muscle mass, which are important for physical function and athletic performance.  The objective of this study was to investigate the effect of the increase in testosterone levels, obtained by administration of ELJ, on body composition and muscle strength and size in man.  Fourteen healthy men performed an intense strength training programme with initial load of 60% RM (2 sets of 10 repetitions with 1 minute rest between, for 10 stations) on alternate days for five weeks.  Simultaneously, seven men were randomly selected to consume 100 mg/day ELJ water soluble extract, and seven men received placebo.  The intensity of the exercise was increased by 10% RM/week.  Body composition, arm circumference, one repetition maximum (1 RM), and surface electromyography (sEMG) activity were measured and recorded one day before and after the five weeks of supplementation and intervention.  The lean body mass of the treatment group showed a significant increment, from 52.26 (7.18) kg to 54.39 (7.43) kg (p = 0.012), but no significant changes in fat free mass were observed in the placebo group.  Percentage body fat was significantly decreased in the treatment and placebo group, from 31.30 (5.48)% to 28.44 (6.43)% (p = 0.01) and from 22.83 (2.43)% to 21.33 (2.35)% (p = 0.001) respectively.  The 1RM test showed a significant increase from 73.71 (16.63) to 78.71 (17.0) kg (p = 0.006) in the treatment group and from 77.29 (8.9) to 79.43 (8.8) kg (p = 0.011) in the placebo group.  The increase in strength in the treatment group was larger than in the placebo group (6.78% and 2.77% respectively).  The mean frequency of sEMG on the biceps in the treatment and placebo groups decreased significantly, from 121.77 (40.0) to 90.47 (64.6) µV (p = 0.012) and from 127.95 (30.9) to 98.8 (50.1) µV (p = 0.036) respectively.  The treatment produced 2.92% greater reduction in electrical activity of the muscle measured at the end of the experiment compared with placebo.  The mean arm circumference of the treatment group increased significantly by 1.8 cm after the supplementation, from 30.87 (1.88) to 32.67 (1.96) cm (p = 0.011), but there was no significant increase in the placebo group.  The results suggest that water soluble extract of Eurycoma longifolia Jack increased fat free mass, reduced body fat, and increased muscle strength and size, and thus may have an ergogenic effect.

An Italian study on Eurycoma longifolia noted improved sexual performance in lab animals and concluded that the "effect could be mainly ascribed to increased testosterone levels."[14]

After scientists investigating Eurycoma longifolia's effect on sexual parameters had established that sexualizing effects went hand-in-hand with increased testoterone tone, researchers in the field of sports medicine started to look into the anabolic potential of the plant.

In a placebo-controlled human study with healthy young men in a weight-training program, it was found that "the lean body mass of the treatment group showed a significant increment, from 52.26 (7.18) kg to 54.39 (7.43) kg (p = 0.012)." Furthermore, "the increase in strength in the treatment group was larger than in the placebo group (6.78% and 2.77% respectively)… The mean arm circumference of the treatment group increased significantly by 1.8 cm after the supplementation… but there was no significant increase in the placebo group." The results of the study were published in the peer-reviewed British Journal of Sports Medicine.[15]

^ a b Zanoli, P; Zavatti, M; Montanari, C; Baraldi, M (2009). "Influence of Eurycoma longifolia on the copulatory activity of sexually sluggish and impotent male rats". Journal of ethnopharmacology 126 (2): 308–13. doi:10.1016/j.jep.2009.08.021. PMID 19703544.
^ "Joint Conference of BASEM and BASES". British Journal of Sports Medicine 37 (5): 464–70. 2003. doi:10.1136/bjsm.37.5.464.

Peer-Reviewed Professional Journals

·    Gauthaman, K., et al.  The hormonal effects of Tribulus terrestris and its role in the management of male erectile dysfunction - an evaluation using primates, rabbit and rat.  Phytomedicine.  2007.

Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Hormonal effects of Tribulus terrestris (TT) were evaluated in primates, rabbit and rat to identify its usefulness in the management of erectile dysfunction (ED).  TT extract was administered intravenously, as a bolus dose of 7.5, 15 and 30mg/kg, in primates for acute study.  Rabbits and normal rats were treated with 2.5, 5 and 10mg/kg of TT extract orally for 8 weeks, for chronic study.  In addition, castrated rats were treated either with testosterone cypionate (10mg/kg, subcutaneously; biweekly for 8 weeks) or TT orally (5mg/kg daily for 8 weeks).  Blood samples were analyzed for testosterone (T), dihydrotestosterone (DHT) and dehydroepiandrosterone sulphate (DHEAS) levels using radioimmunoassay.  In primates, the increases in T (52%), DHT (31%) and DHEAS (29%) at 7.5mg/kg were statistically significant.  In rabbits, both T and DHT were increased compared to control, however, only the increases in DHT (by 30% and 32% at 5 and 10mg/kg) were statistically significant.  In castrated rats, increases in T levels by 51% and 25% were observed with T and TT extract respectively that were statistically significant.  TT increases some of the sex hormones, possibly due to the presence of protodioscin in the extract.  TT may be useful in mild to moderate cases of ED.

·    Georgiev, P., et al.  The effect of the preparation “Tribestan” on plasma concentration of testosterone and spermogenesis of lambs and rams.  Vet Sb.  3:20-22, 1988.

Tribulus terrestris was found to increase testosterone levels in rams and male lambs.

·    Milanov, S., et al.  Tribestan effect on the concentration of some hormones in serum of healthy subjects.  Med Biol Inf.  4:27-29, 1985.

Administration of 750 mg of Tribulus terrestris per day for five days resulted in a 41% increase in free testosterone in eight healthy men and eight healthy women aged 28 - 45.  Testosterone levels were restored to normal in men and women with low initial testosterone levels and testosterone levels did not rise above optimal levels in those subjects with normal initial levels of testosterone.

·    Milanov, S., et al.  Farmatsiya.  37(6):142, 1987.

·    Milasius, K., et al.  The influence of the Tribulus terrestris extract on the parameters of the functional preparadness and athletes' organism homeostase.  Fiziol Zh.  55(5):89-96, 2009.

Vilnius Pedagogical University, Lithuania.

The influence of the Tribulus terrestris extract on the parameters of the functional preparadness and athletes' organism homeostase was investigated.  It was established the positive impact of dietary supplement "Tribulus" (Optimum Nutrition, USA 625 mg standardized to 40% Furastanol Saponins) using 1 capsule 3 times a day during 20 days on athletes' physical power in various energy producing zones: anaerobic alactic muscular power and anaerobic alactic glycolytic power statistically reliable increased.  Tribulus terrestris extract, after 20 days of consuming it, did not have essential effect on erythrocytes, haemoglobin and thrombocytes indices.  During the experimental period statistically significant increased percentage of granulocytes and decreased percentage of leucocytes show negative impact of this food supplement on changes of leucocytes formula in athletes' blood.  Creatinkinase concentration in athletes' blood increased statistically significantly and creatinine had a tendency to decline during 20 days period of consuming Tribulus terrestris extract.  Urea, cholesterol and bilirubin concentrations had a tendency to decline.  The concentration of blood testosterone increased statistically significantly during the first half (10 days) of the experiment; it did not grow during the next 10 days while consuming Tribulus still.