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Testo Tek Review

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Testo Tek is a testosterone booster marketed by Tek Naturals. It comes in 30 serving containers, at $59.99.

Claimed to promote:

  • Libido
  • Testosterone Levels
  • Muscle Gains
  • Energy
  • Fat Loss

This product claims to do many things, but it looking at its ingredient list, it seems to be a copy of our market-leading T-Booster, Testofuel.

Take a look:

About the Company

Tek Naturals is a supplements company that markets a fat burner and a testosterone booster.

They’re based in Mount Pleasant, South Carolina, USA. However, we couldn’t find any more information on their website.

The Ingredients and How They Work

As we’ve already mentioned, this product’s ingredient list is worryingly similar to market-leading T-Booster, TestoFuel – apart from one or two different ingredients included.

We’ve analyzed Testo Tek’s ingredients to see whether Testo Tek can compete against TestoFuel, or whether it’s simply a bad copy.

See for yourself:

Vitamin D3

Technically a hormone, Vitamin D3 is naturally found in the sun’s rays. It comes with numerous benefits, such as increased T-levels, energy, and general health.

However, without the right dose, this ingredient isn’t going to have any effect. You need a daily serving of 5000IU for Vitamin D3 to deliver its benefits – unfortunately, Testo Tek only contains 2000IU per serving, meaning your body will never have an optimal amount of Vitamin D3.

We recommend looking for a product that contains 5000IU servings of Vitamin D3, so you’re always ‘topped up’ with the best amount of this key ingredient.


Tek Naturals has made a big mistake in dosing Zinc. The Tolerable Upper Limit (TUL) for this ingredient is 40mg – meaning you’ll experience side effects when taking single doses higher than 40mg.

As Testo Tek contains a massive 75mg Zinc, you’re likely to suffer from side effects such as nausea, vomiting, diarrhea, and potentially kidney and stomach damage.

We strongly recommend staying under the 40mg daily limit for Zinc – 10mg Zinc per serving is safe, but try not to go any higher for a single dose.

D-Aspartic Acid

This is a key testosterone boosting ingredient, proven to increase strength, T-levels and even growth hormone (GH) levels. Optimal doses of this ingredient are between 2,000mg-3,000mg, so Tek Naturals has dosed D-Aspartic Acid correctly here.

Tribulus Terrestris

Tribulus Terrestris is a herb used traditionally in Indian medicine (Ayurveda). It’s believed to help raise testosterone levels, but no studies have shown this ingredient to be effective in doing this.

However, these same studies found that it can cause an increase in prostate weight, which can lead to severe health problems. This is a very worrying side effect for an ingredient that offers no benefits.

We recommend that you stay away from Tribulus Terrestris to avoid risking an increase in prostate weight.

Mucuna Pruriens

Also known as Velvet Bean due to its itchy surface, this ingredient can reduce cortisol levels – cortisol is a hormone created when you’re under stress. This is important, as cortisol can inhibit testosterone levels, so lower cortisol levels results in higher T-levels.

Numerous studies have proven that this ingredient works, but the problem with Testo Tek is the low dose.

Studies have shown that optimal doses of Mucuna Pruriens start at 300mg servings – Testo Tek only contains 100mg per serving, meaning Mucuna Pruriens might not deliver its benefits with this supplement.

We recommend looking for a testosterone booster that contains at least 300mg of Mucuna Pruriens per serving.

Stinging Nettle Root Extract

This plant is known for its sting when touched, but not many know about its ability to boost T-levels – this has been proven in studies, when it’s taken in doses over 120mg, 3 times a day.

Fenugreek Seed

This herb is a key testosterone boosting ingredient, and has traditionally used to libido and testosterone in India and Arabic regions.

This is how it works – a compound called 4-hydroxyisoleucine in Fenugreek regulates glucose metabolism, which keeps your blood sugar levels from spiking. This is important, as a spike in blood sugar can reduce testosterone by up to 25%.

Oyster Powder

This would be a great addition to any other testosterone booster, but with Testo Naturals already overdosing Zinc, it’s a risky move to include Oyster Powder – this shows that they haven’t done their research into their ingredients.

Why? Oysters are 78% Zinc, meaning this ingredient will increase the overall Zinc content even further – meaning your risk of side effects are even higher.

The most worrying thing about Testo Tek is its high Zinc content. This can cause serious side effects. 

Check out which ingredients work and which don’t in our
– Testosterone Booster ingredients guide – 

Side Effects

Most of the ingredients in Testo Tek are free from side effects, but there are a few concerns – especially with Tribulus Terrestris, and the high amount of Zinc.

Here’s a list of the potential side effects:

  • Nausea (High dose of Zinc)
  • Vomiting (High dose of Zinc)
  • Diarrhea (High dose of Zinc)
  • Kidney and stomach damage (High dose of Zinc)
  • Increase in prostate weight (Tribulus Terrestris)

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Testo Tek Review Conclusion

After reviewing this T-Booster’s ingredient list, it seems more likely to be a copy of the market leader, TestoFuel, than a similar co-incidence.

Tek Naturals has tried to change a few things, by adding Tribulus Terrestris and increasing the Zinc content – both inclusions make it clear that this company haven’t done their research into the ingredients.

You’re at risk of suffering from numerous side effects due to the high Zinc level in Testo Tek, and anyone who knows nutrition well-enough knows this – it’s worrying that a company who claim to be ‘experts’ have missed this.

We strongly recommend looking for another T-Booster, preferably with a lower Zinc content.