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L-Theanine for ADHD: Natural Supplement for Focus

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Have you heard about a study from 2019? It showed that mixing L-theanine with caffeine might help with ADHD. It improved focus and thinking abilities. This finding has made people more curious. They want to learn if this amino acid from nature can really help with ADHD challenges.

L-theanine comes from green tea. Its main claim to fame is calming effects. It also cuts down on anxiety and stress. Recent studies show it might work well for those looking for natural ways to handle their ADHD.

Key Takeaways

  • L-theanine, a natural amino acid found in green tea, has shown potential in improving focus, attention, and cognitive performance for individuals with ADHD.
  • Studies indicate that combining L-theanine with caffeine may enhance its beneficial effects on ADHD symptoms, such as decreased impulsivity and improved sleep quality.
  • While more research is needed, L-theanine could be a valuable addition to a comprehensive approach to ADHD management, particularly for those seeking natural or complementary therapies.
  • Consulting with a healthcare provider is crucial to determine the appropriate dosage and to ensure L-theanine is safe and effective for your individual needs.
  • L-theanine is generally well-tolerated, but potential side effects, such as facial tics in children, should be monitored.

Understanding L-Theanine

What is L-Theanine?

L-theanine is found naturally in green and black tea. It appears in some mushrooms too. This ingredient can help brain function, lower stress, and help you sleep better.

Sources of L-Theanine

L-Theanine comes from green and black tea leaves mainly. Certain mushrooms like Boletus edulis also have it. You can find it in supplements as well. These are good for getting more of this helpful substance.

Potential Benefits of L-Theanine

L-theanine might have several health perks, such as:

  • Lowering blood pressure and making your immune system and body less inflamed
  • Helping you sleep better and feel less anxious or stressed
  • Boosting your focus, ability to pay attention, and how well you think

Its effect on attention has made scientists look into its use for ADHD.

L-Theanine for ADHD

Promising Research Findings

Some small studies suggest that L-theanine may help attention and lessen ADHD symptoms. A 2020 study on five boys with ADHD found interesting brain changes with L-theanine. It also showed better thinking skills when L-theanine was used with caffeine.

In 2019, a study with children found that L-theanine and caffeine made them focus and think better. This was better than when they took a fake pill. Another 2019 study with grown-ups found that speaking skills and brain function got better with L-theanine. This was compared to taking a fake pill.

Mechanism of Action

L-theanine does two big things in our brains. It keeps glutamate around by blocking its reabsorption. It also helps our neurons by affecting GABA (A) receptors, making our brains less stressed and anxious. This can help with ADHD symptoms. This amino acid from green tea might be good for ADHD since studies show it can make attention and control better.

A 2019 study suggested that L-theanine and caffeine together might help with ADHD. They seemed to make attention and thinking skills better. Another study said that combining L-theanine with caffeine improved focus in boys with ADHD more than a fake pill did.

A big review said L-theanine might help people with ADHD sleep better. Also, a different study found that L-theanine and caffeine could improve focus in adults. Together, these studies suggest L-theanine and caffeine might make kids with ADHD less impulsive.

L-theanine is known to calm and reduce stress and anxiety. It helps focus and attention too. Studies found not many bad effects, but one person did get face tics that went away when they stopped taking L-theanine. The right amount of L-theanine changes, with kids taking 2.5 mg/kg and grownups taking 200 mg. We’re not sure yet if L-theanine can replace other ADHD treatments, but it might help alongside them.

Dosage and Administration

Research shows kids age 8 to 12 can do well with 400 mg of L-theanine daily. Mixing L-theanine with caffeine seems to work better.

L-theanine’s calming power starts working after 40-60 minutes of taking it. For best results, use it for at least four weeks. Then you might notice less stress and better thinking.

Recommended Dosages

One study said kids should get 2.5 mg of L-theanine for every kilogram they weigh each day. Adults, on the other hand, can take 200 mg daily.

L-theanine helps a lot with anxiety if you take 200-400 mg a day. Most capsules or tablets for anxiety have about 200 mg of L-theanine in them.

Timing and Frequency

The right time for L-theanine depends on why you’re taking it. But, in general, it’s safe to use at any time. Bigger doses might help more but could bring on headaches or make you feel sick.

l-theanine dosage

Potential Side Effects and Interactions

L-theanine might help with ADHD, but it has side effects and interactions to watch out for. The FDA hasn’t okayed L-theanine for ADHD. So, talking to a doctor before using it is very important.

Safety Considerations

L-theanine could cause light headaches and make you sleepy during the day. It might not mix well with medicines like those for high blood pressure and sleeping pills. Be cautious about mixing it with these. Also, its impact on pregnant or breastfeeding women isn’t fully known.

Drug Interactions

For those looking into L-theanine for ADHD, talking to a doctor is key. They can check that it won’t cause issues with any other medicines you’re on. This ensures it’s used in a way that’s helpful and safe for dealing with ADHD.

l-theanine interactions

Studies on L-theanine’s safety and how well it works for ADHD are still being done. Though the early signs are positive, more research is needed to be certain.

Potential L-Theanine Side Effects
L-Theanine Interactions
Mild headaches
Blood pressure medications
Daytime sleepiness
Unknown safety for pregnant/breastfeeding women

What is ADHD?

ADHD stands for Attention Deficit Hyperactivity Disorder. It makes it hard to focus, resist impulses, and follow directions. This condition is often found in kids under 12.

Types of ADHD

ADHD has three main types: inattentive, hyperactive-impulsive, and combined. Each has its own challenges and symptoms.

Symptoms and Challenges

Folks with ADHD may find it tough to interact with others, do well in school, or behave. They might have trouble staying organized, completing tasks, and controlling their impulses.

Conventional Treatment Options

Traditional treatments for ADHD involve stimulant drugs and CBT. While you can’t cure ADHD, these approaches can help people manage their symptoms.

adhd overview

Integrating L-Theanine into ADHD Management

L-theanine is a helpful aid for those managing ADHD. It boosts cognitive functions and improves attention and sleep. When taken with caffeine, it enhances cognitive performance and mood quickly. Yet, more research is needed to confirm its benefits fully.

If you’re thinking of using l-theanine for ADHD, talking to a doctor is a good idea. They can help you use the supplement in a way that’s best for you. Brainzyme® FOCUS™ combines l-theanine with other natural compounds. This supports better thinking and focus. There are different Brainzyme® products to match your needs for focus and energy.

Brainzyme® FOCUS™ wasn’t made only for ADHD, but it does naturally boost how well you think. The Brainzyme® FOCUS™ Starter Bundle lets you try different products to see what works. Plus, you can get a 10% discount with the WELCOME10 code.

l-theanine for adhd

L-theanine can make a big difference for those with ADHD. It helps with focus, lowers anxiety, and supports good health. Brainzyme® FOCUS™ is a proven product made in Scotland. It offers a natural way to boost your brain’s performance.


L-theanine is a natural amino acid in green tea and select mushrooms. It’s showing great promise for ADHD symptom management. Studies indicate it boosts focus and attention. This is especially true when it’s taken with caffeine.

More research is still needed. But, L-theanine could be a key part of a plan to manage ADHD naturally. Always talk to a doctor before adding it to your treatment.

Studies show L-theanine might help with ADHD. It could make attention better, lower impulsivity, and help thinking. Yet, we need more strong studies to know if it’s a good long-term treatment. By talking with your healthcare team, you can see if L-theanine fits in your care plan. Remember always to have regular doctor check-ups and a plan that’s made just for you.

In short, L-theanine could be a good add-on to regular ADHD treatments. It might help with focus and thinking. As we learn more, people with ADHD and their doctors can think about using L-theanine and other natural things in treatment plans.


What is L-theanine and how does it relate to ADHD?

L-theanine is an amino acid in green tea. It might help with ADHD symptoms. This includes better focus, attention, and thinking skills, especially when taken with caffeine.

What are the potential benefits of L-theanine for ADHD?

L-theanine could lower anxiety and better sleep. It might also help with talking clearly and making decisions, which are important for dealing with ADHD.

What is the recommended dosage of L-theanine for ADHD?

Studies show that up to 400 mg each day is safe for kids 8 to 12. But, the best amount can change from person to person. Talking with a doctor before using it is a good idea.

Are there any side effects or interactions to be aware of with L-theanine?

Some people may get mild headaches or feel sleepy during the day from L-theanine. It can also affect blood pressure drugs and sedatives. Always talk to a doctor before starting L-theanine, especially if you take other meds.

Is L-theanine approved by the FDA for treating ADHD?

The FDA has not said L-theanine can treat ADHD. But, it might help as a part of managing ADHD, according to some studies.

How does L-theanine work in the brain to potentially improve ADHD symptoms?

L-theanine helps by making sure a brain chemical called glutamate works well. It also helps with another brain part that helps control stress and anxiety. This might help with focus and attention.

How soon can I expect to see the effects of L-theanine for ADHD?

L-theanine can start making you feel calm in about 40 to 60 minutes. But, to really see how it helps with stress, thinking, focus, and memory, it’s best to use it for four weeks or more.

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DISCLAIMER: This article is for educational purposes only, always check with your medical doctor before stopping any prescription medications or when implementing any dietary and lifestyle changes.

Healthlyious has strict sourcing guidelines, believes in trustworthy and reliable sources, and relies on peer-reviewed studies, academic research institutions, medical journal publications, and medical associations. We avoid using tertiary references.

Source Links

  1. https://www.verywellmind.com/l-theanine-for-adhd-5248441
  2. https://www.medicalnewstoday.com/articles/l-theanine-adhd
  3. https://www.healthycell.com/blogs/articles/what-is-the-best-dosage-for-l-theanine
  4. https://www.webmd.com/vitamins/ai/ingredientmono-1053/theanine
  5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7403383/
  6. https://www.xcode.life/health/l-theanine-adhd/
  7. https://www.brainzyme.us/blogs/supplements/l-theanine-adhd
  8. https://nmnbio.co.uk/blogs/supplements/l-theanine-dosage-for-adhd


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