L-Theanine vs L-Tyrosine

L-Theanine vs L-Tyrosine: Which is Better for the Brain?

Summary: L-Theanine vs L-Tyrosine; which is better? It all depends on what you’re looking for. L-Tyrosine should be a better choice if you’re looking to enhance your mental focus and clarity, while L-Theanine is a better solution for anxiety and stress. Both of these are safe when used in optimal doses.

All in all, these two work the best when combined with other effective nootropics for brain health.

About L-Theanine

L-Theanine is an amino acid that can be found in green tea, and it has been studied extensively for its potential to help the brain.

It appears that L Theanine has the ability to cause the brain to release Dopamine and GABA neurotransmitters, both of which have been shown to improve mood. Additionally, animal studies have shown that L-Theanine is able to cross through the blood-brain barrier, which can allow for more direct interaction with brain chemistry.

It is most commonly used to help ease mental stress and promote a sense of calm. L-Theanine is also said to help improve learning, but research into this area is still emerging.


L-Tyrosine is a nonessential amino acid that is primarily used as a dietary supplement. It has been shown to alleviate stress and help improve mood, focus, and cognitive performance. L Tyrosine can be found in protein-rich foods such as chicken, turkey, eggs, beans, and soybeans.

Similar to L-Theanine, L-Tyrosine helps the brain produce more dopamine and norepinephrine. Therefore, it helps improve mood, focus, and concentration. It also helps in weight loss by balancing blood sugar levels, promoting muscle repair, and controlling appetite.

Which of the Two is Better for Brain Health?

The best brain health supplement will depend on what you need from your supplements. For example, if you need a supplement for better focus then L-Tyrosine might be better for you than L-Theanine because it has more of a focus-promoting effect than Theanine does.

L-Theanine is a better choice if you’re looking for a solution to stress and anxiety.

Side Effects

There are some side effects associated with L-Theanine and L-Tyrosine such as headaches, stomach problems, anxiety, and sleepiness. These typically go away after a few weeks of taking the supplement. However, they are extremely rare and shouldn’t happen if you follow the recommended daily dosage.


The dosage of these two nootropics depends on what you’re looking for. L-Theanine is typically used at 100-200mg daily, while L-Tyrosine can be used at 500-2000mg per day. If you’re not sure what dosage is right for you, consult your healthcare provider before taking these nootropics for the first time.


Both L-Tyrosine and L-Theanine are decent nootropics for brain health. If you’re looking for enhanced mental focus and attention, L-Tyrosine should be a better choice for you. If you want to diminish anxiety and stress, L-Theanine should work slightly better.

All in all, when these two are combined with other effective nootropic ingredients such as Phosphatidylserine, Bacopa, Rhodiola Rosea, Lion’s Mane, Maritime Pine Bark Extract, and Citicoline, they work even better and would provide a substantial brain boost.

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