Theanine vs Tyrosine: Which is better? Should you stack them?

L-Tyrosine and L-Theanine are two popular nootropic supplements that are often used to enhance cognitive function and reduce stress. They have different mechanisms of action and can provide unique benefits to the brain and body. In this article, we'll explore the benefits of each nootropic, how they work, and the synergistic effects of taking them together.


L-Tyrosine is an amino acid that is a precursor to several important neurotransmitters, including dopamine, norepinephrine, and epinephrine. It is essential for the production of these neurotransmitters, which are involved in mood, motivation, attention, and cognitive performance.

One of the main benefits of L-Tyrosine is its ability to improve cognitive function under stressful conditions. Studies have shown that L-Tyrosine supplementation can improve working memory, attention, and cognitive flexibility in individuals exposed to stressful situations, such as military personnel, athletes, and students.

L-Tyrosine has also been shown to improve mood and increase motivation. It can enhance dopamine levels in the brain, which can help to reduce symptoms of depression and anxiety and promote feelings of well-being and motivation.

Additionally, L-Tyrosine can enhance physical performance by increasing endurance and reducing fatigue. It can also improve thermoregulation and help the body adapt to cold temperatures. Lastly l-tyrosine can also work for weight loss. 


L-Theanine is an amino acid found in green tea that promotes relaxation and reduces anxiety without causing drowsiness. It can help to improve focus, attention, and cognitive performance, while also reducing stress and anxiety.

One of the main benefits of L-Theanine is its ability to increase alpha brain waves, which are associated with a relaxed, yet focused mental state. It can help to reduce mental and physical stress, while also improving cognitive performance.

L-Theanine has also been shown to improve mood and promote feelings of well-being. It can increase levels of serotonin and dopamine in the brain, which can help to reduce symptoms of anxiety and depression and improve overall mood.

Additionally, L-Theanine can enhance sleep quality by promoting relaxation and reducing anxiety. It can also help to reduce symptoms of ADHD by improving attention and reducing hyperactivity. This also makes it a perfect supplement in caffeine pills, which can be a good alternative to coffee. 

Tyrosine vs Theanine: Which is the best nootropic?

When it comes to choosing the "best" nootropic between L-Tyrosine and L-Theanine, the answer isn't necessarily straightforward. Both of these supplements have unique properties that can be beneficial for different purposes. Both can work well alongside citicoline. 

L-Tyrosine is most known for its ability to support the production of neurotransmitters like dopamine, which can enhance motivation, focus, and memory. This can be especially useful in high-stress situations, making it a popular supplement for athletes, students, and anyone who needs to perform at their best mentally. On the other hand, L-Theanine is most known for its ability to promote relaxation, reduce stress, and improve sleep quality, without causing drowsiness. This can make it a great supplement for those who struggle with anxiety, insomnia, or other stress-related issues.

While each supplement has its own unique benefits, taking them together can create a synergistic effect that enhances cognitive performance even further. When combined, L-Tyrosine and L-Theanine can promote both focus and relaxation, creating a sense of calm alertness that can be ideal for tasks that require sustained attention and mental clarity.

Ultimately, the decision on which supplement to take will depend on your specific needs and goals. If you're looking for a supplement to help you stay focused and motivated, L-Tyrosine may be the better option. If you're looking to reduce stress and improve overall well-being, L-Theanine may be the way to go. However, for maximum cognitive benefits, combining both supplements in a nootropic stack may be the best choice.

Synergistic Effects of L-Tyrosine and L-Theanine

people with energy friom l tyrosine and l theanine

Taking L-Tyrosine and L-Theanine together can provide a synergistic effect that enhances cognitive function, improves mood, and reduces stress. The combination of the two can also improve mental clarity and focus, making it an ideal nootropic stack for those who want to improve their cognitive performance.

Studies have shown that combining L-Tyrosine and L-Theanine can improve cognitive function in healthy adults. It can enhance attention, working memory, and executive function, while also reducing mental and physical stress.

One study found that a combination of L-Tyrosine and L-Theanine improved cognitive performance in individuals exposed to acute stress. The combination improved working memory, cognitive flexibility, and mood, while also reducing the physiological response to stress.

Another potential benefit of combining L-tyrosine and L-theanine is improved mood and reduced stress levels. L-tyrosine is a precursor to dopamine, which is a neurotransmitter that plays a role in regulating mood and motivation. By increasing the availability of L-tyrosine, the body can produce more dopamine, leading to a more positive and energized mood.

L-theanine, on the other hand, is an amino acid found in green tea that promotes relaxation and stress reduction without causing drowsiness. Studies have shown that L-theanine can reduce stress responses and improve overall mood and cognitive performance.

When combined, L-tyrosine and L-theanine can have a synergistic effect on mood and stress reduction. By increasing dopamine levels and promoting relaxation, the combination can provide a boost in mental energy and motivation while also helping to alleviate stress and anxiety.

Theanine Tyrosine Stack

For those looking to take advantage of the benefits of both L-tyrosine and L-theanine, a nootropic stack can be an effective option. One recommended stack is to take 500-1000mg of L-tyrosine and 200mg of L-theanine together, preferably in the morning.

For even greater cognitive enhancement, citicoline and caffeine can be added to the stack. Citicoline can support the synthesis of neurotransmitters, including dopamine, while caffeine can increase alertness and focus.

It's important to note that everyone's body chemistry is different, and what works well for one person may not work as well for another. It's always a good idea to start with lower doses and gradually increase to find the optimal dosage for each individual. It's also important to consult with a healthcare professional before starting any new supplement regimen.

In conclusion, while L-tyrosine and L-theanine have different benefits and mechanisms of action, they can be a powerful combination when taken together in a nootropic stack. Theanine can promote relaxation and stress reduction, while tyrosine can increase mental energy and motivation. By combining these two nootropics, individuals can experience greater cognitive enhancement and overall well-being.


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