8 Best Nootropics for Fluid Intelligence in 2023 Reviewed

Updated on April 5, 2023
 by — reviewed by Jason Williams, PhD (Contributor: George Collins / Editor: Yoko Hill)

Do you want to boost your brain power and improve your problem-solving skills? 

If so, then nootropics may be the answer! 

In this guide, we’ll explore the best nootropics for increasing fluid intelligence. 

Keep reading to learn more about how these supplements can help you reach your goals!

Best Nootropics for Fluid Intelligence

  • Nooceptin
  • L-Theanine
  • Ginkgo Biloba
  • Rhodiola Rosea
  • Bacopa Monnieri
  • N-Acetyl L-Tyrosine
  • Citicoline
  • Vinpocetine

1. Nooceptin

Nooceptin is an advanced nootropic supplement that can help to improve fluid intelligence. The special blend of nutraceuticals and extracts in Nooceptin enhances brain function in several ways, including improving memory retention and recall, boosting focus and concentration, reducing stress and anxiety, supporting learning and problem-solving, and more. 

The nootropic ingredients in Nooceptin include Citicoline, L-Theanine, Rhodiola Rosea Extract, Bacopa Monnieri Extract, Ginkgo Biloba Extract, Lion's Mane Mushroom Extract, and Panax Ginseng Extract. Each of these ingredients has been clinically proven to be effective in improving fluid intelligence. With Nooceptin, you can trust that you are getting the best ingredients available to help unlock your full cognitive potential.

2. L-Theanine

L-Theanine is an amino acid found in green tea and is known to reduce stress while increasing focus. It may be one of the best nootropics for fluid intelligence due to its ability to increase the production of GABA, an inhibitory neurotransmitter that can buffer stress. 

Research has shown that L-Theanine can help to improve memory and fluid intelligence, and it is known for its calming effect which can help to reduce anxiety. Additionally, taking L-Theanine can help improve cognitive performance(1) and reduce mental fatigue.

3. Ginkgo Biloba

Ginkgo Biloba is another popular nootropic. It has been used for centuries in traditional Chinese medicine and is known for its ability to improve cognitive function(2). Studies have shown that Ginkgo Biloba can help improve memory, focus and concentration, as well as fluid intelligence. 

In addition, it may also help reduce anxiety and depression. It is important to note that the effects of Ginkgo Biloba may not be immediate—it may take several weeks for the full effects to be realized.

4. Rhodiola Rosea

Rhodiola Rosea, a herb native to Europe and Asia, is a common nootropic. It has been used for centuries as a potent adaptogen. Studies have found that Rhodiola Rosea can help improve your ability to focus and concentrate, and can even increase your IQ level. 

It can also help with memory and recall, making it an ideal supplement for increasing fluid intelligence. Rhodiola Rosea is also known for its calming effects and may be beneficial for reducing stress and improving mood.

5. Bacopa Monnieri

Bacopa Monnieri is a nootropic that may help improve memory and focus, as well as increase fluid intelligence. It is a natural herb that has been used for centuries in India and is occasionally used to treat anxiety and depression. The active ingredient in Bacopa Monnieri is bacoside A, which helps protect neurons from damage and increases the production of neurotransmitters. 

Studies have also found that Bacopa can help improve attention and reaction time, as well as boost overall brain function. Additionally, it has been shown to have positive effects on fluid intelligence, such as improved learning, memory, and problem-solving abilities.

6. N-Acetyl L-Tyrosine

N-Acetyl L-Tyrosine is a nootropic that can help to increase fluid intelligence and cognitive performance. It is an amino acid that can be found in foods such as eggs and dairy products. N-Acetyl L-Tyrosine helps to increase levels of dopamine and adrenaline in the brain, which can improve focus and concentration. It can also improve alertness and reduce fatigue. 

Research has shown that N-Acetyl L-Tyrosine can have a positive effect on cognitive performance, specifically on processes related to fluid intelligence. It is important to note that while N-Acetyl L-Tyrosine may have some benefits, it should still be taken with caution, as it may cause side effects such as nausea, headaches, and insomnia.

7. Citicoline

Citicoline (also known as CDP-choline) is a nootropic that may increase fluid intelligence. Citicoline has been shown to increase brain plasticity and improve memory, focus and learning. It is thought to help the body create new connections between neurons in the brain, which can lead to improved fluid intelligence. 

Furthermore, Citicoline may help protect the brain from oxidative damage, which can also have a positive effect on cognitive performance.

8. Vinpocetine

Vinpocetine is another popular nootropic supplement known to increase fluid intelligence. It is derived from the periwinkle plant, and is known to improve cognitive processes such as memory, focus, and attention. It has also been found to increase the production of acetylcholine, which is an important neurotransmitter for learning and memory. 

Vinpocetine is also known to increase blood flow to the brain, which can lead to improved mental performance. However, it should be noted that this nootropic supplement should be used with caution due to potential side effects such as headaches, nausea, and dizziness.

How We Picked the Top Nootropics for Fluid Intelligence

We employed a comprehensive review process to identify the best nootropics for enhancing fluid intelligence. Our approach considered factors such as effectiveness, ingredients, brand reputation, transparency, manufacturing process, user feedback, price, and value.

By examining each of these aspects, we provide our readers with a reliable and thorough list of the top fluid intelligence-boosting nootropics.


We investigated clinical research and user experiences to measure improvements in fluid intelligence, with an emphasis on problem-solving, abstract reasoning, and cognitive adaptability.


We meticulously examined each formula, prioritizing evidence-based, natural, and high-quality ingredients capable of promoting fluid intelligence.

Scientific Evidence

We referred to peer-reviewed research and meta-analyses to confirm the effectiveness of key ingredients in supporting fluid intelligence.


We evaluated optimal dosages and ingredient ratios, ensuring they align with established research for maximum effectiveness.


We ensured the safety of each ingredient by considering potential side effects and interactions, and verifying compliance with regulatory guidelines. Priority was given to FDA-approved ingredients.

Brand Reputation

We assessed brand credibility and trustworthiness through customer reviews, expert endorsements, and company history.

Product Transparency

We placed a high value on complete ingredient disclosure, comprising sources and concentrations, to facilitate informed consumer decision-making.

Manufacturing Process

We scrutinized manufacturing standards, prioritizing products made in certified facilities and following Good Manufacturing Practices (GMP).

User Reviews

We analyzed genuine customer feedback, giving importance to testimonials that report fluid intelligence enhancement and cognitive improvements.


We compared product prices, ensuring they were competitive and proportionate to the quality and efficacy of the nootropic.


We evaluated overall value by considering the balance of price, quality, and effectiveness to guarantee the best return on investment for consumers.

How Can Nootropics Help with Fluid Intelligence?

Nootropics are substances that are believed to enhance cognitive functions such as memory, creativity, and focus. These substances can also help to increase fluid intelligence, which is the ability to quickly process and adapt to new information. Nootropics work by increasing the supply of neurotransmitters in the brain and increasing the speed at which neurotransmitters are released. 

This can lead to improved cognitive performance, including improved fluid intelligence. Nootropics can also act as antioxidants and protect the brain from damage caused by free radicals. In addition, some nootropics have been found to help reduce anxiety, stress, and depression, which can have a positive effect on cognitive performance.

The Benefits of Nootropics for Fluid Intelligence

Nootropics are dietary supplements that are known to enhance cognitive abilities. There is a wide variety of nootropics that can help with fluid intelligence, including Nooceptin, L-Theanine, Ginkgo Biloba, Rhodiola Rosea, Bacopa Monnieri, N-Acetyl L-Tyrosine, Citoline and Vinpocetine. These nootropics can help improve cognitive function, enhance focus and attention span, and boost overall brain health. 

the best nootropics for fluid intelligence

They have also been found to help increase synaptic plasticity, which is the ability of neurons to form new connections in the brain. This increased synaptic plasticity can lead to increased fluid intelligence and better performance on IQ tests. Other benefits of taking nootropics for fluid intelligence include greater creativity and improved problem-solving skills.

The Safety and Side Effects of Taking Nootropics to Increase Fluid Intelligence

When considering taking nootropics to increase your fluid intelligence, it is important to consider the safety and side effects of the substances. Many of the substances discussed here, such as L-Theanine, Ginkgo Biloba and Rhodiola Rosea, are well-tolerated and have minimal side effects. However, it is always wise to consult with your doctor before taking any nootropic supplement, as some may have adverse reactions with other medications or health conditions. 

Additionally, it is important to be aware of any potential interactions with medications or other substances and to follow the recommended dosage on the supplement label. By following these precautions and doing your research, you can ensure that you are taking the right nootropics for increased fluid intelligence in a safe and effective way.

Tips on Choosing the Right Nootropic for Fluid Intelligence

Finding the right nootropic to improve your fluid intelligence can be a daunting task due to the sheer number of products available. Many of them have a long list of ingredients and effects, so it can be difficult to determine which one is right for you. It’s important to do your research and read reviews from other users before deciding on a nootropic. 

Additionally, it’s a good idea to consult with your doctor before taking any new supplements, especially if you have any existing health conditions. Furthermore, it's important to keep a log and see which supplements works best for you, as each person's body chemistry is different. Finally, consider taking the best IQ Test online to determine your current cognitive abilities so you can measure the effectiveness of the nootropics you take.

Conclusion: The Pros and Cons of Taking Nootropics That Increase Fluid Intelligence

In conclusion, taking nootropics to increase fluid intelligence can be beneficial, as long as it is done safely and responsibly. Nootropics can help improve cognitive functions such as executive function, memory, and focus. It can also help with decision making, problem-solving, and creativity. However, it is important to remember that nootropics should not be taken without consulting a healthcare professional first. 

Additionally, the effects of nootropics vary from person to person, so it is important to do your own research and decide which nootropics are best for your individual needs. Furthermore, one should always keep track of the dosage and any side effects that may occur in order to maintain safety and achieve optimal results.