What is L-Theanine?

L-theanine is a natural amino acid found in tea leaves, especially green tea. It's the compound that gives tea its calming effect. Recently, researchers have been studying whether L-theanine might help with attention and focus problems in people with ADHD.

How Does L-Theanine Work?

L-theanine crosses into your brain where it affects several important brain chemicals and processes:

Increases calming brain chemicals: It boosts levels of GABA, serotonin, and dopamine, which help regulate mood, focus, and relaxation
Reduces mind wandering: Studies show it helps decrease activity in the brain network responsible for distraction and wandering thoughts
Enhances brain waves: It increases alpha brain waves, which are associated with relaxed alertness and better attention
Supports brain health: It may increase brain-derived neurotrophic factor (BDNF), a protein that helps brain cells stay healthy and communicate better

The effects typically begin within 30-60 minutes after taking it.

What Does the Research Show?

Early research suggests L-theanine may help with some ADHD symptoms, particularly when combined with caffeine. Studies have found improvements in:

Overall thinking and cognitive performance
Sustained attention and focus
Ability to ignore distractions
Reaction time on attention tasks

However, it's important to know that research on L-theanine for ADHD is still in early stages. Most studies have been small, and more research is needed to confirm these benefits.

How to Use L-Theanine

Typical doses studied:

For attention improvement: 100-400 mg per dose
For children with ADHD (in research studies): 2.5 mg per kilogram of body weight
Higher doses (200-400 mg) appear more effective than lower doses

Timing:

Effects begin 30-60 minutes after taking it
Can be taken once or twice daily

With or without caffeine:

Some research suggests L-theanine works better when combined with caffeine
A common combination is 200 mg L-theanine with 160 mg caffeine
However, caffeine may not be appropriate for everyone, especially children

Important Considerations

L-theanine is generally considered safe with no serious side effects reported in studies
It should not replace standard ADHD treatments without discussing with your doctor
The evidence for L-theanine in ADHD is still preliminary and not as strong as for FDA-approved ADHD medications
Always talk to your healthcare provider before starting any new supplement, especially if you're taking other medications

The Bottom Line

L-theanine shows promise as a potential supplement for improving attention and focus in people with ADHD, but it's not a proven treatment yet.

L-Theanine

Products

L-Theanine, 400 mg