When you’ve got busy deadlines to meet, and a high mental load, it’s little wonder that many people turn to nootropic supplements in the hope that they can give them a little bit of a boost, both mentally and physically. iCortex, from Cho Yung, promises quite a lot in terms of brain enhancement and memory development.

But does it? Does iCortex really live up to its bold claims, or is it something not to bother wasting your money on? We look at it in further detail below.

iCortex Pros

  • 100% satisfaction and money-back guarantee
  • UK manufactured under strict regulations
  • Relatively cheap

iCortex Cons

  • Possibility of some ingredients underdosed
  • Many ingredients have little evidence to support effect on improved cognition
  • Some ingredients, when combined together, have undesirable effects for some consumers
Watchdog Rejected


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What You Need To Know About iCortex

iCortex is a UK manufactured nootropic supplement, manufactured and sold by Cho Yung, who is most well known for producing weight-loss teas.

The product claims to help cognitive brain enhancement, neuro-focus, increased memory, concentration, and cognition. The manufacturer claims the specially formulated for professionals and students with high-pressure work-loads, however great results can be seen by athletes, fitness enthusiasts, and the health conscious.

What Are The Side Effects Of iCortex?

Side effects of taking caffeine in a supplement can include headaches, increased heart rate, increased blood pressure, heart palpitations, increased urination, dehydration, jitteriness, dizziness, and insomnia.

Studies have also shown that Bacopa extract causes upset stomachs in participants much more than when placebos were taken. We recommend that this ingredient is taken with a meal, rather than on an empty stomach, as this will minimize the chances of getting an upset stomach. It may also cause nausea, cramping, bloating, and diarrhoea.

Some side effects of Phosphatidylserine can include insomnia and stomach upset. It can be made from either plant or animal sources, and so may not be suitable for vegetarians.

How Much Does iCortex Cost?

From the official Cho Yung website, iCortex is £24.99. This is the same as on Amazon, with free shipping. This is for 60 capsules, which is a 30-day supply.

Our Verdict On iCortex

Whilst there are some ingredients in here that are known to have a positive effect of cognition, such as caffeine and the cholinergic supplements, many of the ingredients have little or no evidence to back them up.

We are concerned about the combination of caffeine and bitter orange peel, as this can cause some problems to some people, and some of the ingredients such as bacopa monnieri are underdosed. Whilst it may help some people, we believe that there are much better nootropic supplements out there to spend your money on, so we do not recommend iCortex to our readers.

The most popular consumer choice in 2021 is OmniMind

Containing ingredients that have been clinically tested and boasting a 30-day money-back guarantee, OmniMind is quickly rising to the top of the nootropic world.

Find out why people are choosing OmniMind to achieve advanced brain performance, and why it's our editor's top pick.

Read the Nootropic Watchdog OmniMind review here.

iCortex Review

iCortex is a supplement made by Cho Yung, who is most notably known for their production of weight loss and ‘detox’ teas. It is designed to help improve memory, cognitive brain enhancement, concentration, and focus.

iCortex Facts

  • Manufactured by Cho Yung in the UK to the highest GMP standards
  • 60 capsules per bottle (30-day supply)

Cho Yung is a UK based company. Their offices are listed as being based in Folkestone. They have been operating since 2008, and are most well known for their range of weight loss and detox teas.

How to Take iCortex

Take two capsules each day with water

iCortex Concerns:

  • Very few customer reviews or testimonials

What Does iCortex Claim To Do?

The manufacturer of iCortex claims the product:

Contains nutrients that help your body to increase acetylcholine levels whilst other ingredients assist in elevating neurological components vital to remaining calm, focused and mentally driven.

Does iCortex Work?

Whilst there is little doubt that some of the ingredients are useful for cognitive improvement, many have no evidence to support or are underdosed. Overall, this supplement seems unlikely to significantly improve cognition, but it may have a small benefit due to the inclusion of caffeine and choline.

What Are The Ingredients of iCortex?

  • DHA 17% (veg) (25mg): This is a type of Omega 3 Fatty acid. Fish oil contains both docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), two different types of Omega-3 fatty acids. Omega-3 fatty acids are essential nutrients that are important in preventing and managing heart disease, but that also have numerous other benefits. Findings show omega-3 fatty acids may help to; improve skin and hair quality, help to protect against cognitive decline, lower blood pressure, reduce triglycerides, slow the development of plaque in the arteries, reduce the chance of abnormal heart rhythm, reduce the likelihood of heart attack and stroke, and lessen the chance of sudden cardiac death in people with heart disease. Source
  • Citrus aurantium whole fruit (80mg): More commonly known as Bitter orange peel, it has been proven to raise the metabolism and aid weight loss. However, there are concerns about its safety. It is thought that when taken with stimulants such as caffeine or caffeine-containing herbs (as it is in this supplement), increases the risk for high blood pressure, fainting, heart attack, stroke, and other severe side effects As a stimulant, it is also likely to increase energy levels.
  • Caffeine anhydrous pure (50mg): Anhydrous caffeine is caffeine that contains lower amounts of water – less than 0.5%. Studies involving athletes have shown that you would probably get a larger boost of energy from taking anhydrous caffeine than drinking coffee. Caffeine is generally recognized as safe when consumed in moderate amounts, as this is, but it is still a stimulant and may react with some of the other ingredients.
  • L-Tyrosine (50mg): This is an amino acid that is a building block of protein and is found naturally in many foods, including meat and dairy products. In existing trials, L-Tyrosine appears to effectively improve cognition and memory during stressful periods. Source
  • L-Theanine (50mg): L-theanine is an amino acid that occurs naturally in all types of tea made from the Camellia sinensis plant, including green, black and oolong tea, as well as mushrooms. It elevates levels of serotonin and dopamine. These chemicals are known as neurotransmitters, and they work in the brain to regulate emotions, mood, concentration, alertness, and sleep, as well as appetite, energy, and other cognitive skills.
  • Guarana extract (22% caffeine) (50mg): This is a berry that is naturally high in caffeine, it is often an ingredient in energy drinks and diet pills. Studies are mixed as to whether guarana improves mental performance.
  • Choline Bitartrate (41% choline) (45mg): This is a type of cholinergic, which is a term sometimes used to refer to supplements that positively influence acetylcholine (a neurotransmitter that mediates muscle contraction and learning) signalling in the brain. According to experts, choline bitartrate is the cheapest and most basic form, which does have benefits for the body but may not increase acetylcholine in the brain very reliably.
  • Phosphatidylserine (20%) (20mg): This ingredient is claimed to help treat age-related memory problems, but scientific evidence to support its use is somewhat lacking
  • Phosphatidylcholine (30%) (20mg): This is another type of cholinergic, which is linked to improved learning, memory retention and recall. It is naturally occurring in the brain. Whilst supplementing Phosphatidylcholine could help to boost Acetylcholine levels in the brain in theory, the link between Phosphatidylcholine supplementation and improved cognition has not been studied in depth at all.
  • Ashwagandha extract (20mg): The consensus of new studies into this ingredient is that it helps to improve the overall health of brain cells as well as the communication between brain cells.
  • L-Phenylalanine (15mg): This is an amino acid, which is used for treating depression, as well as other things. However, the research to suggest that this will treat depression is outdated, with calls for more testing using updated research methods.
  • Bacopa monnieri extract (15mg): This is used to reduce anxiety, improve memory, and seems to have the ability to treat depression, making it a general mild mood booster. However, effects can take a while to show.
  • Nicotinamide (niacin) (7.50mg): This ingredient was only discovered fairly recently, and in initial studies, it has been shown to increase levels of the essential coenzyme NAD+. This is especially important in reducing the risk of age-related diseases, extend lifespan, and reduce cognitive deficits.
  • Panax ginseng (80% ginsenosides) (6mg): Panax Ginseng has been shown in studies to benefit cognition in people who are fatigued or sleep deprived, but it does not show any cognitive benefits for anyone who is well-rested
  • Pantothenic acid (90%) (4.4mg): Pantothenic acid is also known as vitamin B5 and is known to enhance alertness, cognition, energy, hearing, vision, elevate mood, lower anxiety, and normalize healthy cholesterol levels.
  • Black pepper extract (95% piperine) (3.16mg): This ingredient increases the amounts of nutrients that are absorbed into the body in the digestive tract.
  • Ginkgo leaf extract (3mg): This regulates neurotransmitters, protects from brain cell degeneration, increases blood vessel microcirculation (blood flow in the smallest of blood vessels), and has antioxidant benefits. Interestingly, the ginkgo tree is the oldest species of tree on earth and is considered a living fossil. In fact, Four Ginkgo trees survived the atomic explosion in Hiroshima!
  • Vitamin 12 pure (cyanocobalamin) (0.20mg): Vitamin B12 is known to enhance alertness, cognition, energy, vision, elevate mood, lower anxiety and pain, and relieve insomnia.
  • Folic acid (97%) (0.10mg): There are mixed results and evidence to back up whether this has any effect on cognitive function in healthy adults.

Does iCortex Have Any Side Effects?

Some of the ingredients can have side effects for some consumers. This includes headaches, increased heart rate, increased blood pressure, heart palpitations, increased urination, dehydration, jitteriness, dizziness, and insomnia from the caffeine sources, and stomach issues from the bacopa extract and Phosphatidylserine.


Like all supplements, take medical advice if you have existing health conditions, are pregnant or are a nursing mother.

Are There Any Customer Reviews For iCortex?

We have been unable to find many reviews for the product, although there are four on Amazon, which are all positive.

Perfect for what i needed, i work in a very high stress job where missing a deadline is an absolute no-no. These Nootropics are perfect for enabling to keep up my concentration at maximum level while i complete the task at hand. Have been using them for a few days and can feel a noticeable difference!

KSmith, May 2018

Does iCortex Offer a Money-Back Guarantee?

iCortex offer a 100% satisfaction money-back guarantee on Amazon and on their website.

Where Can I Buy iCortex?

iCortex is available on Amazon or the Cho Yung Tea website.

How does iCortex compare to OmniMind?

Criteria iCortex Comparison OmniMind
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee

1.9 out of 5
iCortex Rating

The Nootropic Watchdog does not recommend iCortex.

  • Effectiveness
  • Safety
  • Price / Guarantee
The most popular consumer choice in 2021 is OmniMind

Containing ingredients that have been clinically tested and boasting a 30-day money-back guarantee, OmniMind is quickly rising to the top of the nootropic world.

Find out why people are choosing OmniMind to achieve advanced brain performance, and why it's our editor's top pick.

Read the Nootropic Watchdog OmniMind review here.

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

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