L-Theanine
An amino acid found in green tea that synergizes with caffeine to enhance cognitive performance, attention, and reaction time while reducing anxiety and jitters. It promotes calm, attentive states by increasing GABA and glycine signaling.
Common Themes
Videos Mentioning L-Theanine

How To Use Coffee To Live Longer (Full Guide & Research)
FoundMyFitness
An amino acid found in green tea that synergizes with caffeine to enhance cognitive performance, attention, and reaction time while reducing anxiety and jitters. It promotes calm, attentive states by increasing GABA and glycine signaling.

LIVE EVENT Q&A: Dr. Andrew Huberman Question & Answer in Chicago, IL
Andrew Huberman
Mentioned as a supplement that is similar to serotonin and can activate certain receptors, often discussed in relation to microdosing psilocybin, though data on its effects is not compelling.

Dr. Andrew Weil — The 4-7-8 Breath Method, How to Emerge from Depression, & More
Tim Ferriss
A calming amino acid found in matcha that modifies the effects of caffeine, reducing jitters and providing a smoother energy profile compared to coffee. It's found in higher concentrations in shaded tea leaves.

The Science of Making & Breaking Habits
Andrew Huberman
A supplement mentioned to support sleep in phase three of the day.

Developing a Rational Approach to Supplementation for Health & Performance | Huberman Lab Podcast
Andrew Huberman
A supplement (100-400mg) that helps with easing into sleep, but can cause excessively vivid dreams, leading some to avoid it.

Constructing Self and World: A Conversation with Shamil Chandaria (Episode #320)
Sam Harris
A supplement mentioned, likely in relation to cognitive enhancement or anxiety reduction, although not substantively discussed.

Using Caffeine to Optimize Mental & Physical Performance
Andrew Huberman
A non-protein amino acid present in green tea, used to offset the jitteriness of caffeine by reducing overall alertness-promoting neuron actions, and can also enhance sleep quality and reduce anxiety/depression.

Maximizing Productivity, Physical & Mental Health with Daily Tools
Andrew Huberman
A compound (100-200mg) that increases GABA and activates chloride channels in neurons, helping to reduce brain activity and aid the transition to sleep.

Sleep Toolkit: Tools for Optimizing Sleep & Sleep-Wake Timing
Andrew Huberman
A supplement that can induce drowsiness and deeper sleep, but some individuals may find it causes vivid or anxiety-ridden dreams.

Season Finale: Tons of New Meta-Analyses and Q&A Catch-Up (Episode 46)
Stronger By Science
A supplement that promotes relaxation without sedation, often paired with caffeine to reduce jitters and anxiety. Recommended dosing is 100-200mg.

The Science & Treatment of Obsessive Compulsive Disorder (OCD)
Andrew Huberman
A component of Andrew Huberman's sleep toolkit.

Guy Laliberté, Founder of Cirque du Soleil | The Tim Ferriss Show
Tim Ferriss
A Momentous supplement ingredient used by the host to improve sleep onset, quality, and duration.

How to Exercise & Eat for Optimal Health & Longevity | Dr. Gabrielle Lyon
Andrew Huberman
Amino acid found in 'strong coffee' that helps with jitters and anxiety.

Dr. Andrew Huberman — A Neurobiologist on Sleep, Performance, and Anxiety | The Tim Ferriss Show
Tim Ferriss
An amino acid that can create a hypnotic state and help turn off thoughts for sleep, recommended at 200-400mg before sleep.

Doping, Collagen, Goals, and Hyperplasia (Episode 33)
Stronger By Science
A non-dietary amino acid found in teas, associated with relaxation without sedation, and often paired with caffeine to mitigate jitters.

Q&A: Bands, Chains, Useful Supplements, and Tweaking Your Program (Episode 27)
Stronger By Science
An amino acid that helps take the 'edge off' of caffeine, reducing jitters while maintaining alertness; some promote it for general relaxation.

Tools for Managing Stress & Anxiety
Andrew Huberman
A supplement that can enhance the transition to sleep and sleep depth, increases GABA, reduces forebrain activity, and has been shown to notably reduce stress and task completion anxiety.

Optimize Your Learning & Creativity With Science-Based Tools
Andrew Huberman
A compound mentioned as a supplement taken to facilitate sleep.

How to Defeat Jet Lag, Shift Work & Sleeplessness
Andrew Huberman
A supplement (100-300mg) that activates GABA pathways to calm top-down thinking, making it easier to fall asleep. It can increase dream intensity, so sleepwalkers or those with night terrors should avoid it.

Random Show — Fasting, Biohacking, and Tony Robbins | The Tim Ferriss Show (Podcast)
Tim Ferriss
A supplement Kevin Rose tried, combined with coffee, which he found interesting and reported as making him and a friend feel 'cracked out'.

Brandon Stanton Interview | The Tim Ferriss Show (Podcast)
Tim Ferriss
An amino acid found in Four Sigmatic's matcha blend, contributing to a balanced energy boost.

Joseph Gordon-Levitt Interview | The Tim Ferriss Show (Podcast)
Tim Ferriss
An amino acid included in Four Sigmatic's matcha blend that helps provide balanced energy without jitters.

Supplements for Longevity & Their Efficacy | Dr. Peter Attia
Andrew Huberman
A supplement taken by Andrew Huberman before sleep.

Dr. Stacy Sims: Female-Specific Exercise & Nutrition for Health, Performance & Longevity
Andrew Huberman
A supplement mentioned for improving sleep hygiene, possibly stacked with Rhodiola to promote relaxation.