Tribulus

TheDaddy2003

after some comments just ordered some ISA-TEST thx

sitries

tribulus is crap from my experience. i saw no weight strength gains. andthere is no sound scientific knowlege that back up the claims that it raises test levels. just get some good qualty protein and creatine monohydrate and thatl do the job. by all means - try the tribulus and see what you think, but i found it to do nothing really.

SoulCard

i think it depends on the picodosin (sp?!) content...it has to be at least 40% or higher to be effective...i know a guy who orders his own trib powder and caps his own...suppposed to be effective that way...

Nick500

i have used it and didn't feel anything. I suppose its possible that it might raise your natural test like 10%, but that really isn't significant in terms of building lots of muscle compared to if you were cycling and your test levels 800%

I believe it works by boosting Leutinizing hormone (LH) which is a precursor to testosterone, but doesn't really work unless you are LH deficient (old men..)

Nick

TheDaddy2003

oh well i start it tonight 4 tablets before bed or 1 hour before training.

was suprised that it stated u take it all in one go just once a day.

totti

Trib will help you pop another load when watching porno imo :mrgreen: but if you buy it to pack 10 pounds of muscle then u will be disappointed. Jay is right make sure the picodosin is at least 45% or more.

TheDaddy2003

i had a good squat session tonight, obviously in the mind but you no what they say about the mind.
I think i will gain good off this stuff and probably have to add to the porn collection, feeling the effects already

Young Gun

I don't. I think you may gain from the placebo which shouldn't be discounted but tribulus is overrrated overpriced and there is not a single credible study I could find to back up its use in bodybuilding

BuCki

I was just on about to open a new subject about - Tribulus Boost -
but as I saw this topic... thought to ask in here!!

So, you guys say - Tribulus Boost - is just waist of money!?
It does not help at all ?!?

I was going to have a goo with that...
After my mate told me that Tribulus Boost incrises Testorons in a natural way
and which does not have any side-effects...

True or not ture?!

Young Gun

Scientific Analysis of Over-the-Counter Testosterone Boosters
by Jay McCombs

Introduction

Question One: What do you get when you mix 19 molecules of carbon, 28 molecules of hydrogen, and 2 molecules of oxygen? It could be a lot of things, but maybe (if you are lucky) it could order into 17beta-Hydroxyandrost-4-en-3-one. Sound familiar? That's right, it's your friend and mine testosterone.

Question Two: How can you increase your body's natural production of testosterone? That's a tougher one. Pro-hormones are no longer easily obtained legally and personal stashes will soon dwindle, making this question even timelier.

In the next few pages I will review the scientific literature through exhaustive searches of Medline, CINAHL, EBM, and SPORTDiscus with regard to some of the most popular Over-the-Counter testosterone boosters currently on the market. I will examine the possible mechanism of action for each and assess whether any of these alleged testosterone boosters have a positive effect on testosterone production, exercise performance, or both.


Tribulus Terrestris

The first on the list is of course Tribulus Terrestris, specifically the steroidal saponin protodioscin. Tribulus has long been used in various cultures as an aphrodisiac and treatment for sexual dysfunction. The theory then follows that this increase in libido is probably due to increased levels of androgens, which would also mean that Tribulus generates some type of ergogenic effect. So what does the research say?

First lets look at several studies conducted on animals that examined the aphrodisiac properties of Tribulus. The first study investigated the response of corpus cavernosal tissue isolated from rabbits that were fed Tribulus for eight weeks [1]. After harvesting, tissues were then exposed to protodiscin, contractile agents, and relaxant agents. Tissue strips from treated rabbits showed an increased rate of relaxation when administered various relaxing agents after said tissue was constricted with norepinephrine. This indicated that Tribulus seemed to have some effect on the rabbits’ ability to get erections; however, no specific mechanism could be pinpointed.

Follow up research ensued. The next two studies, conducted on castrated rats, examined variables that essentially investigated how sexually aroused the rats were [2, 3]. The researchers found that Tribulus supplementation definitely appeared to increase the rats libido. Again however, an exact mechanism could not be found.

The latest study by the same researchers tried to determine the mechanism of action by which the mice and rats each appeared to experience heightened arousal levels [4]. Once again, rats were fed Tribulus for 8 weeks. Immunoreactivity studies were performed on the androgen receptor (AR), while Nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) levels were taken from the rat paraventricular nucleus in order to determine activity.

The researchers found activity at both receptors increased over control; however, this muddied the waters a bit. NADPH-d neurons are the same that contain NOS. Previous research indicated these neurons were inhibited by increased androgen activity. The researchers attributed this to effects mediated through the conversion of androgens to estrogen, which would then increase the number of NADPH-d neurons. The end result was the same: Tribulus undoubtedly heightened arousal, but whether this was a result of increased androgen levels was unclear.

So, rats having sex is fun to watch, but we want to get buff, right? Well, lets talk about primates. Primates given Tribulus intravenously showed a transient (read, 30 minutes) increase in testosterone and DHT and a longer increase in DHEAS (an increase of about 25-50% for about 120 minutes), which might be helpful with DHEA mediated effects on sexual function if your testosterone was low [5]. Otherwise, this effect probably would not be noticeable.

In my opinion, the nail in Tribs coffin comes from the following two studies. The first study examined body weight, body composition, maximal strength, dietary intake, and mood states of subjects before and after 8 weeks of taking either a Tribulus extract or a placebo [6]. No significant change was found in any of these parameters after supplementation with Tribulus when compared with the placebo group.

The next study evaluated claims that LH and subsequently testosterone levels were increased above normal after ingesting Tribulus extracts [7]. Baseline levels of testosterone and its metabolites in urine and serum were established for all subjects. Participants were then fed a heaping gram of Tribulus daily for 4 weeks. Testosterone levels were checked routinely, and researchers found no significant increase in hormone levels beyond normal day to day variations. This research is the most significant and relevant to our discussion here today. It was conducted on humans and looked for the two variables we are most concerned with: increasing testosterone and, in turn, increasing exercise performance—and in both of these studies Tribulus failed to do either.

I just briefly want to discuss the Sopharma research. This research was not included in this review for several reasons. It has not been published in a reputable English language journal and subsequently peer reviewed; and, subsequent research has been unable to elicit the same results when conducted in a similar manner [7].

In my opinion Tribulus is not useful for increasing androgen levels in healthy males or improving exercise performance. There may be some effect on individuals with androgen deficiencies where Tribulus acts as a precursor to deficient DHEA, but at this time the only conclusion that can be definitively drawn about Tribulus is that it seems to be quite effective at making castrated rats horny [8].


Also Iv'e already posted this in a complete analysis of Over the Counter Testosterone boosters. Becuase these questions get asked so many times. Please use the seacrh function I don't hagve the time to re post over and over again.