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Why Theanine (L-theanine) keeps getting recommended on podcasts

Theanine (L-theanine) came up with a genuine on-air endorsement 7 times across the episodes we processed. This page collects every one of those moments: who said it, what they said, and the exact point in the episode.

L-theanine has become the supplement world's answer to caffeine jitters, and Andrew Huberman and Tim Ferriss have both pushed it hard enough to rack up 7 recommendations between them.

We pulled the exact wording from each transcript so you can hear the actual dosing advice and reasoning, not a repackaged summary. Every entry links to the moment it was said.

(generic supplement) · Product

Theanine (L-theanine)

7 on-air endorsements2 shows: Andrew Huberman, Tim Ferriss7 episodes
Where to get it & every mention

The endorsements, in their words

Andrew Huberman · 2024-11-21
“100 to 200 milligrams of theanine for me also helps me turn off my mind and fall asleep.” — Andrew Huberman 00:31:48

Huberman breaks down the science of sleep and alertness, with light timing as the single most powerful lever for both.

Andrew Huberman · 2023-01-23
“the other supplements that I take and recommend for sleep, such as magnesium 3 and 8, apigenin, and theanine.” — Andrew Huberman 03:56:27

Huberman's deep dive into the biology of male and female fertility, plus behavioral, supplement, and clinical tools to optimize it.

Andrew Huberman · 2022-12-05
“Many people opt to take 100 milligrams of theanine, T-H-E-A-N-I-N-E, theanine, as a way to offset some of that jitteriness. Theanine will reduce the jitteriness of caffeine.” — Andrew Huberman 01:07:54

Andrew Huberman breaks down how caffeine works as both stimulant and powerful reinforcer, and how to time and dose it for peak performance.

Andrew Huberman · 2022-07-11
“in combination with the magnesium threonate, apigenin, theanine sleep kit that I've talked about” — Andrew Huberman 01:56:27

Huberman explains how four neuromodulators run your brain, and the food, light, cold, and supplements that let you tune them.

Andrew Huberman · 2022-06-27
“my existing toolkit for sleep ... consists of magnesium threonate, apigenin, and theanine.” — Andrew Huberman 02:06:50

Andrew Huberman breaks down what OCD actually is, the brain loop behind it, and which treatments work in what order.

Tim Ferriss · 2021-07-14
“200-400 milligrams of theanine can create a kind of a hypnotic state help you fall asleep” — Andrew Huberman 00:35:46

Stanford neurobiologist Andrew Huberman on using light, breathing, and the body to control sleep, stress, and performance.

Andrew Huberman · 2021-01-11
“100 to 200 milligrams of theanine, for me, also helps me turn off my mind and fall asleep” — Andrew Huberman 01:15:57

Huberman explains how light, adenosine, and the circadian clock govern sleep and alertness, with tools to fix both.

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