Testo Lab Pro Ashwagandha Testosterone Booster Review

Buy the Testo Lab Pro T-Booster

Opti-Nutra is on a mission to optimise human performance with its range of core and sports supplements. The Testo Lab Pro T-Booster is packed with precisely formulated superfoods, vitamins and minerals with to goal of boosting your testosterone levels and enhancing muscle size and sports performance. A bottle contains 120 capsules which, with a recommended serving of four per day gives you a months supply. 

With each serving, you get 600mg of KSM-66 Ashwagandha, a trademarked preparation of the beneficial root designed to be quickly absorbed and extra potent. I’ve just completed a months course of the recommended serving of four capsules per day.

Further reading: Best Ashwagandha Supplements UK

First impressions of Testo Lab Pro with Ashwagandha

Everything about the Testo Lab Pro from its website to the packaging indicates that theirs is a technologically advanced approach to supplementation. The box and plastic bottle inside has a bold design that gives the impression of something that would look at home on the shelves of an upmarket pharmacy.

I’ve used ashwagandha several times before but never KSM-66, so I was keen to see if it made any difference. Along with the ashwagandha you also get:

  • Vitamin D – 50mcg
  • Vitamin K1 and K2 – 50mcg
  • Magnesium – 50mg
  • Zinc – 30mg
  • Boron – 6mg
  • D-Aspartic Acid Calcium Chelate – 600mg
  • Mucuna Pruriens Extract – 300mg
  • Luteolin – 60mg

Testo Lab Pro is designed to ‘optimise every stage of testosterone production’ including blocking substances that are likely to deactivate it. With claims like ‘Increases T up to 17%, Boosts muscle strength, size, recovery. Fortitude, focus and masculine power’ I was keen to get started.

Who makes Testo Lab Pro?

Testo Lab Pro is made by Opti-Nutra. Opti-Nutra is an international supplier of high-performance supplements with facilities in the US. Each product is designed and formulated in the UK and then manufactured in New Jersey, US. They use the latest science to produce biologically active versions of vitamins and minerals.

Over several decades, fruits and vegetables have been slowly losing their nutritional value from beneficial vitamins and minerals. As these essential nutrients get leached from the soil, they no longer pass into plants in the volumes necessary for healthy diets. To combat this, Opti-Nutra creates supplements that can be added to a balanced diet to improve health and wellbeing and sports performance.

Instead of using whole foods or standard synthetic methods, they use a technique they call Nutrigenesis. Nutrigenesis is a method of producing specific nutrients in lab conditions from single-celled organisms like yeast. The result is nutrients in a form that is highly potent and can be quickly recognised and absorbed by your body.

All of the ingredients they used are subject to numerous safety checks at every stage of production, and the majority are patented versions that have been proven to be highly effective and fast-acting. Most of their formulations are free from GMO, soy, allergens, gluten, synthetic additives and suitable for vegans. The Testo Lab Pro is one of the few items from Opti-Nutra that is suitable for vegetarians but not for vegans. 

Awards and certifications

Opti-Nutra and is FDA registered, certified as achieving the standards of Good Manufacturing Practices (GMP) and has a USDA organic certification.

They are also certified by the Natural products Association and are European Supplement Commission compliant. On their website, they detail molecular level testing that is conducted at multiple stages to ensure that each product is up to scratch. They also say that they employ a third-party to verify their results and verify their standards.

The level of authorisation and verification here is beyond anything that I’ve seen from any brand before. The only drawback is that there are no examples of the results of these tests and quality analysis. For me, the final step would be to see an example of the analysis with the product to verify the precise contents and screening for contaminants. 

I would have awarded a higher score if: There was a copy of the third-party analysis available for customers to view.

Ease of use

Capsules are likely one of the most straightforward ways to consume a supplement. These are large, but I found it easy to swallow the recommended serving of two capsules with a small amount of water. The shells are patented as NutriCaps, made entirely of fermented tapioca and are entirely vegan. They are designed to dissolve quickly and cleanly in your stomach, allowing the fine powder inside to absorb effectively in your gut.

The information and directions on the packet and website are second to none. There is a detailed explanation about each ingredient, and the FAQs section allows you to explore many of Testo Lab Pro’s details in more depth.

The bottle is lightweight yet sturdy, and although I’ve taken my daily measure at home in the morning, they would be easy to take with you in a pocket or bag. The only extra I would’ve liked to have seen is a child-safe cap, they aren’t standard for supplements, but they would be a welcome addition.


The capsules have no noticeable flavour and added no taste to the water as I swallowed them.

How effective are they?

KSM-66 Ashwagandha has been shown in several studies to have an impressive effect on the growth of muscle. Of the many other studies into testosterone production, some suggest that taking vitamins and minerals, particularly zinc and vitamin D. The research backs up the formulation of the Testo Lab Pro, so I was expecting good results.

Before I started these, I hadn’t had any other supplements for at least two months, so I was pleased that they contained a broad range of vitamins and minerals to give me a general health boost as well as targeting the testosterone. Standard treatments to raise testosterone promise effects in between 4 weeks to 3 months, so I wasn’t expecting anything to happen quickly.

The first week showed no differences, and I even noticed a few more tension headaches than usual. But later, after the first week, I noticed a dramatic change in my mood to an extremely positive state of mind that I’d not seen in a while. From here, things continued to improve. Now having used the full thirty days supply, I’ve noticed a general improvement in energy, mood and focus.

Although I think it’s too soon to tell about an increase in testosterone-related results, the effect on other areas of my life has been impressive. I’ve taken several supplements designed to boost energy and mood before, and none have been as effective as this one.

Value for money

A month’s supply for £52.45 plus shipping and handling places this at the premium end of the market. However, not only do I think it’s worth it, but I’ve already ordered a second bottle. I can’t personally say that at this point I’ve noticed an increase in muscle mass, but I’ve only been taking them for a month and do very little resistance training. The studies around ashwagandha indicate that an effective formulation like KSM-66 is likely to have potent results.

Although I’ve never been concerned about my testosterone levels or wanted to increase them, the Testo Lab Pro had such a broad range of effects that I’ve found it worthwhile.

I would have awarded a higher score if: it was a lower price.

My Supplement Recommendations

These are products that I currently use and enthusiastically recommend:

MultivitaminNutrigenesis Multi for Men or Nutrigenesis for Women. Performance Lab use their patented Nutrigenesis technique to provide a range of vitamins and minerals in their most effective form. Read my review.

NootropicMind Lab Pro contains eleven natural nootropics that have been proven to support cognitive function and brain health. Read my review.

CollagenEdible Health Bovine Collagen. This excellent bovine collagen powder is completely tasteless and absorbs quickly into any liquid.  It’s third-party lab tested and provides 13g of collagen per serving. Read my review.

Turmeric – VitaBright Organic Turmeric with Ginger and Black Pepper. These turmeric capsules are organic, effective and affordable. They include black pepper to enhance curcumin absorption and ginger to provide additional useful benefits. Read my review.

Incredible valueG&G Vitamin 28 day packs This is the most affordable way to buy supplements in the UK. One tub holds 28 daily packs of up to 11 different vitamins, minerals or food supplements.

You may also be interested in reading our round-up of the best multivitamins UK, or best vitamin D supplements UK.

Anthony Walker, the founder of BeardsBase, shared with us an article about the role of testosterone in healthy beard growth.

Testo Lab Pro T-Booster is a high-tech, natural testosterone booster that I found to have a wide range of effects, including boosting my mood and improving my energy levels. It contains branded vitamins, minerals and superfoods in highly absorbable forms for the quickest most potent effect. The website has a detailed breakdown of exactly why each item was included and what its role is. Manufacturers Opti-Nutra have numerous awards including organic certification and verification of meeting GMP standards. It’s an expensive supplement, but for me, it was well worth it.
Awards and certifications
Ease of use
How effective are they?
Value for money
Made with highly bioavailable ingredients
Supports every stage of testosterone production
Suitable for vegetarians
Certified organic
Free from allergens, banned substances, soy, synthetic additives, caffeine and gluten
Manufactured to GMP standards
Not suitable for vegans
Buy the Testo Lab Pro T-Booster