STI G6 Sports Anabolix Testosterone Booster Review

STI G6 Sports Anabolix Testosterone Booster Review

First Look:

What looks to be cut from the same cloth as its Androxyfx brethren, we’re hoping this product will score higher that a big fat zero.

Where Androxyfx failed was because it is a mindless clone of a host of other products that seem to be churned out all over Amazon that are pretty darn useless.

However, immediately I can see a problem with CycloFX…this is going to be fun.

Ingredients: The Science




Tribulus – Once again, the old tribulus raises its ugly head.

The problem is that because this has been touted about for so long as a bit of a miracle plant extract used by the mysterious Eastern Bloc Olympic Athletes during the Cold War people have started to believe the hype and it is an easily recognizable ingredient the ill informed will have heard about down the gym.

The issue is that it has not been scientifically proven to raise testosterone levels in any shape or form.

Avoid like a medieval plague if you are looking for muscular gainz.

3,3′-Diindolylmethane (DIM) – A compound derived from the digestion of indole-3-carbinol, found in cruciferous vegetables such as broccoli, Brussels sprouts, cabbage and kale.

DIM can prevent the conversion of testosterone to estrogen.

Longjack Extract – Eurycoma (Tongkat Ali, LongJack) is a pro-fertility agent and aphrodisiac that appears to have a large body of evidence supporting this role and some evidence suggesting it may be an anti-estrogen and pro-erectile agent.

However, there is a lack of evidence for testosterone boosting in humans, although some very limited evidence in animals.

N-Methyl-D-Aspartic Acid – NMDA supplementation does not increase the activity of the HPG axis, nor does it preferentially increase skeletal muscle mass and strength in resistance-trained males when compared to placebo.

Agaricus Bisporus – White button mushrooms to you and me, these are seen to be a aromatase inhibitor, therefore they reduce the production of estrogen which can maintain a higher testosterone level.

If a man suffers from too much estrogen they can get bitch tits – puffy nipples.

3,5,7-trihydroxy-4-methoxyflavon (Hesperetin) – This is supposed to have some anti-aromatase effect, unproven in humans however.

Same goes for it’s supposed cholesterol leveling properties. Found in Prohormones, of which the legalities are different country to country.

There are signs of anti-inflammatory properties though.

3,4-Divanillyltetrahydrofuran (Ursolic Acid) – In studies of mince, ursolic acid increases skeletal muscle, brown fat and energy expenditure.

These effects are associated with increased strength and exercise capacity, and reduced obesity.


3 pills per day. This equates to, if i have done my math correctly, a ridiculously low and ineffectual 15.3mg!

At first glance it looked like we had 15,300mg which I thought was insane, then I noticed that was in mcg, the conversion being the lowest dosed testosterone booster I have seen.

In terms of pill dosage, if this had any thing in them, I would much prefer 4 pills to be spread out across the day to ensure that the body suffers less spikes and troughs of the ingredients.


This current line up is quite interesting.

There are 2 very common ‘testosterone stimulating’ ingredients tat are often found in supplement, yet they are proven to do nothing to very little at all.

Then we have a relation of the widely lauded D-Aspartic Acid (DAA), although this version known as NMDA isn’t particularly useful at all.

We also have 2 estrogen ‘blockers’, so to speak which help prevent the conversion of testosterone to estrogen, and that is fine, but hardly testosterone stimulating.

Additionally, we have 2 ingredients that are not present in any of the supplements I have reviewed and tested thus far.

Hesperetin seems to offer anti-inflammatory properties and Ursolic Acid has shown positive results when tested on mice, not only to increase skeletal muscle but also decrease body fat, as well help with a fatty liver.

So what is effective?  There’s realistically 3 active ingredients that will help testosterone levels…sort of.


I cannot sweep the absolute lack of ingredients provided here under the carpet.  This is the lowest amount ever. At just 15.3mg!

That is scandalous.

This combined with a proprietary blend means we just do not know the exact breakdown of each ingredient present.

Although dissapointing, it does not surprise me to see Tribulus make an appearance, not to mention the host of other ingredients that have a real lack of any human studies.

All of this and then the price tag is $139.99 is enough to make your eyes water. That is just for 1 months supply too.

So, okay, there’s 3 useful ingredients, but at these low levels…nope, just doesn’t add up to anything effective. Not in practice anyway.

It lacks a real plethora of active and proven ingredients that are tested on humans like the best testosterone boosters out there.


This is an expensive ‘luxury’ supplement. At these rates with this little amount of ingredients present this equates to being way more expensive mg for mg than gold with today’s value. Unbelievable.

1mg of gold is $0.043

1mg of G6 is $8.49

Yet, even at this cost, we are left with very few ingredients that will have any positive effect if even if they were properly dosed. As such this will do absolutely nothing.

It is missing too many key testosterone boosting ingredients such as B6, B12, Zinc, Magnesium, D3, D-Aspartic Acid, Fenugreek, Asian Ginseng or K2 to be truly effective.


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Ben BA(Hons), PGCert

Ben established this site to be a free resource in 2015. Since then it has gained over half a million visits. He has always been interested in sport and he started playing rugby at the age of 6 represented his town, county and school. Ben also enjoys cycling, has started skiing and is in the Army Reserve representing his Regiment as part of the 150 Regimental Shooting Team. He holds a bachelor's and postgraduate degree in sport exercise & nutrition.
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