Tribex-500 (Tribulus Terrestris

[New Body]

Tribex-500 (Tribulus Terrestris)

What's the study on this . . . is it only for people with aproblem or can the "normal" population use it to boost their testosterone.

Thanks in advance

[natty]

works well for giving you endless hard ons but besides that i didnt notice any real gains.

[LAWNSAVER]

Anyone can take it! In my opinion, its a waste of money to buy brand names. Go to www.beyond-a-century.com and buy the powder. The quality is better and its much more cost effective!

[Billy_Bathgate]

I take it if Im off cycle and feel like my sex drive isnt where is should be. Not that brand though. I use Twinlab with DHEA. I like the stuff personally. Although now that the 10mg AM dbol theory is out, I prob wont again, unless Im out..then I will.

To answer your question though, I would say yes. Problem with andro is they are so short lived and arent even a natural hormone. However, DHEA is. The Tribulus works like clomid in a sence that it causes a slight LH secretion. If you follow the pathways, the DHEA converts to androstiene, which converts to testosterone. That is my guess of why it may work better.

[Annonamous1]

Just a waste of money IMO.

[hhajdo]

Here are a few studies:

Int J Sport Nutr Exerc Metab 2000 Jun;10(2):208-15 Related Articles, Links


The effects of Tribulus terrestris on body composition and exercise performance in resistance-trained males.

Antonio J, Uelmen J, Rodriguez R, Earnest C.

Human Performance Laboratory, University of Nebraska, Kearney, NE 68849-3101, USA.

The purpose of this study was to determine the effects of the herbal preparation Tribulus terrestris (tribulus) on body composition and exercise performance in resistance-trained males. Fifteen subjects were randomly assigned to a placebo or tribulus (3.21 mg per kg body weight daily) group. Body weight, body composition, maximal strength, dietary intake, and mood states were determined before and after an 8-week exercise (periodized resistance training) and supplementation period. There were no changes in body weight, percentage fat, total body water, dietary intake, or mood states in either group. Muscle endurance (determined by the maximal number of repetitions at 100-200% of body weight) increased for the bench and leg press exercises in the placebo group (p <.05; bench press +/-28.4%, leg press +/-28.6%), while the tribulus group experienced an increase in leg press strength only (bench press +/-3.1%, not significant; leg press +/-28.6%, p <.05). Supplementation with tribulus does not enhance body composition or exercise performance in resistance-trained males.

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Int J Sport Nutr Exerc Metab 2000 Sep;10(3):340-59 Related Articles, Links


Effects of anabolic precursors on serum testosterone concentrations and adaptations to resistance training in young men.

Brown GA, Vukovich MD, Reifenrath TA, Uhl NL, Parsons KA, Sharp RL, King DS.

Exercise Biochemistry Laboratory, Department of Health and Human Performance, Iowa State University, Ames, IA 50011, USA.

The effects of androgen precursors, combined with herbal extracts designed to enhance testosterone formation and reduce conversion of androgens to estrogens was studied in young men. Subjects performed 3 days of resistance training per week for 8 weeks. Each day during Weeks 1, 2, 4, 5, 7, and 8, subjects consumed either placebo (PL; n = 10) or a supplement (ANDRO-6; n = 10), which contained daily doses of 300 mg androstenedione, 150 mg DHEA, 750 mg Tribulus terrestris, 625 mg Chrysin, 300 mg Indole-3-carbinol, and 540 mg Saw palmetto. Serum androstenedione concentrations were higher in ANDRO-6 after 2, 5, and 8 weeks (p <.05), while serum concentrations of free and total testosterone were unchanged in both groups. Serum estradiol was elevated at Weeks 2, 5, and 8 in ANDRO-6 (p <.05), and serum estrone was elevated at Weeks 5 and 8 (p <.05). Muscle strength increased (p <.05) similarly from Weeks 0 to 4, and again from Weeks 4 to 8 in both treatment groups. The acute effect of one third of the daily dose of ANDRO-6 and PL was studied in 10 men (23 +/- 4 years). Serum androstenedione concentrations were elevated (p <.05) in ANDRO-6 from 150 to 360 min after ingestion, while serum free or total testosterone concentrations were unchanged. These data provide evidence that the addition of these herbal extracts to androstenedione does not result in increased serum testosterone concentrations, reduce the estrogenic effect of androstenedione, and does not augment the adaptations to resistance training.

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It seems to have aphrodisiac properties...

Int J Androl 2000;23 Suppl 2:82-4 Related Articles, Links


Phytochemicals and the breakthrough of traditional herbs in the management of sexual dysfunctions.

Adimoelja A.

School of medicine 'Hang Tuah' University, Teaching and Naval Hospital,Surabaya, Indonesia.

Traditional herbs have been a revolutionary breakthrough in the management of erectile dysfunction and have become known world-wide as an 'instant' treatment. The modern view of the management of erectile dysfunction subscribes to a single etiology, i.e. the mechanism of erection. A large number of pharmacological agents are orally consumed and vasoactive agents inserted intraurethrally or injected intrapenially to regain good erection. Modern phytochemicals have developed from traditional herbs. Phytochemicals focus their mechanism of healing action to the root cause, i.e. the inability to control the proper function of the whole body system. Hence phytochemicals manage erectile dysfunction in the frame of sexual dysfunction as a whole entity. Protodioscin is a phytochemical agent derived from Tribulus terrestris L plant, which has been clinically proven to improve sexual desire and enhance erection via the conversion of protodioscine to DHEA (De-Hydro-Epi-Androsterone). Preliminary observations suggest that Tribulus terrestris L grown on different soils does not consistently produce the active component Protodioscin. Further photochemical studies of many other herbal plants are needed to explain the inconsistent results found with other herbal plants, such as in diversities of Ginseng, Eurycoma longifolia, Pimpinella pruacen, Muara puama, Ginkgo biloba, Yohimbe etc.

[Billy_Bathgate]

Well...it did help the sex drive area, which was my main reason for taking it, but its clear thats about all it does.

[JohnnyB]

hhajdo had some great studies.

JohnnyB

[Archetype]

I've wondered about this myself and I've read the studies posted by hhajdo before but I wonder if their tribulus didn't work because it was not standardized for protodioscine.

[ham]

Advice is good.
Perhaps Tribulus is NOT the next juice-like wonder HOWEVER one MUST pay attention to STANDARDIZATION when buying ANY herbal compound, that is HPLC or else tested/assayed potency & presence of ACTIVE ingredients.
That works for juices as welll....
Before assessing one compound's results be sure you do are using that compound instead of dehyonized water or fillers.