Aliens and The Godfather? Or Highlander and Zoolander? Which type of sequel is this?

tl; dr ... Short and to the Point
Who is this article aimed at?
Anybody who has heard of TestoTek by Tek Naturals and wants to find out if the revised version beats the original.
I am busy - summarize it for me

They say the sequel is never better than the original (apart from Godfather Part 2). Are they right?

Tek Naturals have overhauled their flagship test booster and we find out whether this is an Aliens and The Godfather type sequel ... or a Highlander and Zoolander type sequel.

Our Supplement Rating
  • Ingredients :
  • Price :
  • Trust :
  • Testimonials :
  • Company :
  • Overall Score: 6.0/10
  • Positive

    • A great lineup of T boosting ingredients
    • Improved formula
    • Decent serving schedule
    • Strong testimonials
  • Negative

    • Some key ingredients over dosed - side effects possible
    • Some key ingredients under dosed
    • Not suitable for those with shellfish allergy
    • At higher end of price scale

TestoTek v2.0 Review

I’ve been reviewing a lot of boosters recently aimed at building muscle, but there’s nothing like an upcoming birthday to snap your focus back to age related T loss.

Luckily I’m turning 29 for the 4th time next week, so yet again I don’t have to worry about dropping T levels.

Although Prime Male has been sitting pretty at the top of our list boosters for guys who’ve reached 30+ for some time now, we were very interested in the release of Test Tek v2.0 earlier this year.


The first time round, TestoTek didn’t have a formula that got us excited. But as Winston Churchill one said;

To improve is to change: to be perfect is to change often

So … has TestoTek v2.0 changed for the better?

If it’s going to be a proper photo finish then the difference is going to be in the small details. Handy that we’ve got them then, as TestoTek 2.0 has no proprietary blends. We’ve got all the ingredients listed in full with their amounts.

How Does It Work?

At a Glance

  • D-Aspartic Acid & Vitamin D3 to boost T
  • Vitamin B to raise energy and limit estrogen
  • Fenugreek to balance blood sugars
  • Zinc to support T production
  • Mucuna pruriens to raise L-Dopa
  • Oyster extract for added zinc and other nutrients
  • Red ginseng for blood flow and libido

Plenty to like. Let’s take a look at the scores

The Scores

The Scores

There’s really no deadweight in the TestoTek formula. Tek Naturals have done some work on this and picked a star line up.

However … and unfortunately there is a however … it seems they haven’t done quite as much homework as they might have. Not only have they underdosed some of the ingredients, they’ve overdosed some too.

First the underdosed ingredients. The D-AA and D3 are below the accepted levels for helping T.

Now the over dosed ingredients. The zinc levels are near the top end of tolerance, which is fine – except that they’ve also included zinc rich oyster extract. This could tip the zinc levels to intolerable levels.

It gets worse though, the B6 dosage is extreme (at 2941%) and there’s a much higher possibility of side effects. See more about this further down the page.


TestoTek almost nailed it. They were smart enough to use the best products on the market as inspiration for a new formula.

It’s not just the formula though, they have cloned the whole business model. Product pricing, discounts, guarantees. It’s almost a great job. But we can’t give a good score because of the flaws in the formula.


TestoTek is manufactured in California and has all the guarantees and assurances associated with FDA approved cGMP manufacturing.

There are no reports (that we could find) that would suggest there’s anything untrustworthy about Tek Naturals. However with question marks over a formula and side effects, we cannot award a high score in the trust department unfortunately.


The testimonial section on the TestoTek website is impressive, a real rarity.

It has names, photos and professions of guys who use it, along with compelling testimony. There’s a really nice spread of ages in the feedback too which is a plus.

The only thing which is slightly off putting is that some of the images have a ‘stock’ feel to them. And some reviews outside the official site were less positive so we’ve had to knock off some points from full marks for that.


Tek Naturals, who make TestoTek, are an impressive company considering they only started up in 2015. Just now they focus on 2 products, TestoTek for T and TekBurner for losing excess weight.

They appear to be aiming for quality rather than quantity. They offer a money back promise if you’re not satisfied, and have updated and improved TestoTek rather than expanding the range.

It’s a strong start and we like a manufacturer who is brave enough to revisit a product and try to improve the formula.

How Do I Take It?

Users take 3 servings of 4 caps a day.

They are to be taken with meals throughout the day meaning your active ingredients are being topped up at regular intervals.

Any TestoTek Side Effects?

Yes, unfortunately this is a real possibility. Including 25mg of Zinc alongside zinc rich oyster extract means that the upper tolerance of 40mg per day could potentially be breached in conjunction with a zinc rich diet.

Symptoms of zinc toxicity (https://www.ncbi.nlm.nih.gov/pubmed/2407097) include nausea, vomiting, epigastric pain, lethargy, and fatigue. Copper deficiency is also possible.

Worse than this though are the levels of vitamin B6. As already mentioned, 50mg is 2941% of RDA. The ‘safe upper limit’ of B6 depends very much where you live. In the US the FDA chnaged the upper limit to 100mg in 2000. However European levels are much lower.

The following table on tolerable limits set out in this paper (page 43 of the pdf) -> http://www.efsa.europa.eu/sites/default/files/efsa_rep/blobserver_assets/ndatolerableuil.pdf

As you can see the TestoTek dosage is double the safe upper limit for an adult.

vitamin B6 EU Tolerance Table

It quotes;

Some of the subjects who reported minor neurological symptoms in the study of Dalton and Dalton (1987) were taking only 50 mg of pyridoxine per day

Where Can I Get It?

TestoTek is available from the official website for $69.99 for a month’s supply, with a slight discount if you subscribe for monthly bottles.

Ingredients – In Detail


Vitamin D3

We get vitamin D3 mainly from sunlight and in actual fact it isn’t a vitamin at all. It’s a hormone we need it to survive.

In the right amount it’s also proven to raise T. Sadly that amount is above 3000IUs and we only have 2000IUs here.

So it’s not all it could be. (The vitamin D Council’s most recent advice is 5000IUs)



Vitamin K2

K2 is a vitamin found in meats and is important for maintaining plasma levels in the body and our own supply of testosterone. It’s also a support to D3, allowing it to work more effectively by prevent calcification in the arteries and soft tissue.

This is one of the ingredients topped up in the new version of TestoTek.



Vitamin B Complex

This vitamin B complex contains 3 B vitamins: 2, 5, 6, totaling 80mg.

B6 is given the biggest share which is good as it’s the most important. This vitamin can slow the production of the female hormone estrogen and lower the influence of the estrogen already in your system. Remember estrogen creeps up as we age and if it’s up, T is down.

We don’t want to labor a point, but if you missed the section above on B6 limits you might want to read it.



Low zinc and low T often go hand in hand. This is because crucial building blocks for T – like luteinizing, growth and folicle stimulating hormones – all depend on a healthy supply. It’s tough to get enough from food, so a boost of 25mg here is welcome.

However … augmenting the formula with oyster extract pushes the zinc intake still further and zinc in the diet is likely to push that up to (if not over) your tolerance levels.



D-Aspartic Acid

D-AA is a potent amino acid which stimulates the brain encouraging a supply of the same key hormones as zinc (luteinizing hormone, growth hormone and follicle-stimulating hormone.)

Significant evidence also suggests that D-AA may remove rate limits in testosterone synthesis in the testes. This enables us to achieve higher peaks.

Again though for real benefits you need at least 3500mg and we’ve only got 2000mg. This is definitely on the light side.



Mucuna Pruriens

Strong choice, and dose is tripled in this new version. Promotes the amino acid L-DOPA, which stimulates T. It also cuts cortisol, the stress hormone.

Lowering cortisol not only stops T being blocked but improves your mood. 350mg is a strong amount.



Stinging Nettle Root

The beta sitosterol in this ingredient is effective at lowering SHBG. Sex Hormone Binding Globulin is a protein which attaches itself to testosterone preventing it from being used in the right way. If it is lower that means we have more Free T racing round our system to be put to good use.




In the right amount this can raise libido, stimulate androgens, and help balance blood sugars. That last one is important as this helps regulate insulin and stops skewed levels getting in the way of T. Just 75mg is unlikely to have much of an effect though. Another choice skimped on unfortunately.



Oyster Extract

Long thought to be a strong aphrodisac it also contains many useful trace elements and is rich in zinc.


Panax Genseng

Used often in traditional medicine. Ginseng has shown ability to boost nitric oxide in the body, helping healthy blood flow which can helps with issues such as erectile dysfunction.

As well as helping to regulate blood sugar in a similar way to Fenugreek, Ginseng contains steroidal saponins which can increase T levels, luteinizing hormone and androgens in men.


Anything Missing

Despite a strong showing, it’s a pity there’s no magnesium in TestoTek to help further lower SHBG and raise free T. Or boron to improve the balance of male and female hormone. Luteolin is also a powerful anti-estrogen ingredient that’s missing.


TestoTek v2.0 is like the Street Fighter of T boosters. Meaning the second one is better than the original.

However (there is always a ‘however’ with TestoTek it seems), if it’s StreetFighter 2 then it’s more of a Blanca than a Ken or Ryu. It’s not going to be beating the best of the best.

Studies Quoted in the Review

  1. Pilz, S et al. Effect of vitamin D supplementation on testosterone levels in men.  Medical University of Graz, Austria (2011)
  2. Takumi, N et al Dietary vitamin K alleviates the reduction in testosterone production induced by lipopolysaccharide administration in rat testis.  Tohoku University, Sendai, Japan (2011)
  3. Bliskind & Bliskind  Inactivation of testosterone propionate in the liver during vitamin B complex deficiency. Alteration of the estrogen-androgen equilibrium  (1945)
  4. Kilic, M et al. The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc. Selçuk University, Konya, Turkey (2006)
  5. Topo E, Soricelli A, D’Aniello A, Ronsini S, D’Aniello G. The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats. Stazione Zoologica Anton Dohrn, Napoli, Italy (2009)
  6. D’Aniello et al D-Aspartate, a Key Element for the Improvement of Sperm Quality . Advances in Sexual Medicine, Vol. 2 No. 4, 2012, pp. 45-53
  7. Yamada T, Nakamura J, Murakami M, Okuno Y, Hosokawa S, Matsuo M, Yamada H. Effect of chronic L-dopa administration on serum luteinizing hormone levels in male rats. Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., Osaka, Japan (1995)
  8. Gansser D, Spiteller G. Plant constituents interfering with human sex hormone-binding globulin. Evaluation of a test method and its application to Urtica dioica root extracts. Lehrstuhl Organische Chemie I, Universität Bayreuth, Bundesrepublik, Deutschland (1995)
  9. Kochhar A, Nagi M. Effect of supplementation of traditional medicinal plants on blood glucose in non-insulin-dependent diabetics: a pilot study  Punjab Agricultural University, Ludhiana, Punjab, India (2005)
  10. Reay JL, Kennedy DO, Scholey AB.  Single doses of Panax ginseng (G115) reduce blood glucose levels and improve cognitive performance during sustained mental activity.  Northumbria University, UK (2005)
tl; dr ... Short and to the Point
Who is this article aimed at?
Anybody who has heard of TestoTek by Tek Naturals and wants to find out if the revised version beats the original.
I am busy - summarize it for me

They say the sequel is never better than the original (apart from Godfather Part 2). Are they right?

Tek Naturals have overhauled their flagship test booster and we find out whether this is an Aliens and The Godfather type sequel ... or a Highlander and Zoolander type sequel.

Our Supplement Rating
  • Ingredients :
  • Price :
  • Trust :
  • Testimonials :
  • Company :
  • Overall Score: 6.0/10

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