Sigma K
Sigma K: Fadogia Agrestis, Indonesian Tongkat Ali, Ashwagandha & more
Premium testosterone-boosting supplement
Supplement with no additives
Sigma K: similar to Sigma from Gorilla Mind
Sigma K

Sigma K

Regular price €54.99
Tax included. Shipping calculated at checkout.

Product Description

Sigma K is our second-generation premium testosterone-boosting supplement, including Indonesian Tongkat Ali Root, Fadogia Agrestis Stem, Ashwagandha and more. It contains no artificial colours, binders, fillers or preservatives.

Sigma K Highlights:

  • Fadogia Agrestis Stem
  • Indonesian Tongkat Ali Root
  • Ashwagandha (5% Withanolides)
  • Plus Magnesium, Zinc, Vitamin D3 & Boron
  • 180 Capsules per bottle
  • No artificial colours, binders, fillers or preservatives

More about Sigma K

In addition to premium quality Indonesian Tongkat Ali Root, Fadogia Agrestis Stem and Ashwagandha, we've added other well-researched nutrients to help boost your testosterone levels: Magnesium Glycinate (a more bioavailable form of magnesium than is found in most supplements), Zinc, Vitamin D3 and Boron.

Indonesian Tongkat Ali Root

Indonesian Tongkat Ali Root, also known as Eurycoma longifolia, is a medicinal plant indigenous to Southeast Asia and is highly prized for its health benefits.

It is particularly revered for its ability to naturally enhance testosterone levels, which can lead to a myriad of benefits including improved muscle strength, endurance, and overall physical performance.

Additionally, Tongkat Ali has been associated with increased libido and sexual health, making it a popular supplement for men seeking to improve their reproductive health.

Beyond its effects on hormonal balance, it also boasts anti-inflammatory properties, supports mental health by reducing stress and anxiety levels, and enhances the body's energy levels. This combination of benefits makes Indonesian Tongkat Ali Root a versatile supplement for enhancing overall well-being and vitality.

Fadogia Agrestis Stem

Fadogia Agrestis Stem, a herb native to Africa, has gained attention for its potential health benefits, particularly in the realm of traditional medicine and among fitness enthusiasts.

One of its most notable properties is its ability to naturally increase testosterone levels, which can lead to significant improvements in muscle mass, strength, and overall athletic performance. This increase in testosterone can also enhance libido and sexual health, making it a valuable supplement for men's reproductive health.

Additionally, Fadogia Agrestis is believed to possess antioxidant properties that may protect cells from damage and reduce inflammation, contributing to better health and recovery.


Ashwagandha is a plant that has been used for thousands of years in Ayurvedic medicine. It is known for its many health benefits, including helping people feel less stressed and more relaxed. It can also help people sleep better and improve their memory and thinking skills.

Another benefit of ashwagandha is that it can help people feel stronger and more energetic. It can also help people with certain health conditions, such as anxiety, depression, and high blood sugar levels. It may also help with weight loss and increase muscle mass.

Suggested Use

As a dietary supplement, take 3 to 6 capsules spread throughout the day.

This supplement should be cycled. Take daily for 1 month then take at least 1 week off before resuming use.

Premium Quality

As with all Kratox supplements, Sigma K uses only the finest raw ingredients without any artificial colours, binders, fillers or preservatives.

100% Money Back Guarantee*

We're so confident in the effectiveness and quality of this product that if you are not happy with the results after 45 days / one full bottle, we will issue a full refund.

* Users must be over 32 years old.

Customer Reviews

Based on 1 review
Daragh Rice
Good quality, excellent service.

The Sigma K is a great quality product. It works, has helped both my mood and muscle development.
The company are very responsive, I once had and issue with a different product, and they sent a new one straight away without any fuss.
Delivery times in Ireland are better than any other supplement company.
Would recommend both company and products.

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