L-theanine

This supplement has been genuinely recommended 5 times across 2 different shows: Andrew Huberman, Tim Ferriss. The people who vouched for it on air: Andrew Huberman. It comes up in conversations about addiction & recovery, anxiety & stress, brain health, exercise & strength, hormones. The earliest recommendation we indexed is from Mar 2021 and the most recent from Jun 2026. Every quote below is verbatim, attributed, and linked to the exact second it was said. Sourced expert opinion, not medical advice.

• “100 to 400 millig of theanine taken again alone or in combination ... many people find allows them to ... fall asleep really deeply”

  Why it counts as a recommendation: “many people find allows them to get really drowsy and fall asleep really deeply and they feel much more refreshed”
  Andrew Huberman · Huberman Lab · Jun 202600:26:58

  Said during "Essentials: Sleep Toolkit for Optimizing Sleep & Sleep-Wake Timing". Huberman's condensed sleep toolkit: how light, temperature, food, exercise, and a few supplements set your 24-hour clock for better sleep.

• “the third is theanine which is known to have a a mild uh anti-anxiety uh component to it”

  Why it counts as a recommendation: “the supplements that I recommend when people ask for supplement recommendations specifically”
  Andrew Huberman · Huberman Lab · May 202402:20:21

  Said during "Dr. Matt Walker: The Science of Dreams, Nightmares & Lucid Dreaming | Huberman Lab Guest Series". The episode features Dr. Matt Walker: Sleep scientist, professor of neuroscience at UC Berkeley, and author of the bestseller Why We Sleep. This is the sixth and final episode of the Huberman Lab guest series on sleep. Sleep scientist Matt Walker explains why we dream, how nightmares can be rewritten, and whether lucid dreaming is worth it.

• “I still use the same sleep stack. So it's magnesium threonate... theanine, and apigenin”

  Why it counts as a recommendation: “I still use the same sleep stack. So it's magnesium threonate, spelled T-H-R-E-O-N-A-T-E, theanine, and apigenin”
  Andrew Huberman · The Tim Ferriss Show · Mar 202301:15:41

  Said during "Dr. Andrew Huberman, The Foundations of Physical and Mental Performance". The episode features Dr. Andrew Huberman: Neuroscientist and tenured professor in the Department of Neurobiology at Stanford University's School of Medicine, and host of the Huberman Lab podcast. Andrew Huberman walks Tim Ferriss through his weekly training split, supplement stack, and the five daily foundations of physical and mental performance.

• “So I'll take magnesium threonate, theanine, and apigenin as a so-called sleep stack about 30 to 60 minutes prior to sleep.”

  Why it counts as a recommendation: “I'll take magnesium threonate, theanine, and apigenin as a so-called sleep stack”
  Andrew Huberman · Huberman Lab · Dec 202200:19:19

  Said during "AMA #2: Improve Sleep, Reduce Sugar Cravings, Optimal Protein Intake, Stretching Frequency & More". The episode features Andrew Huberman: Professor of neurobiology and ophthalmology at Stanford School of Medicine and host of the Huberman Lab podcast, where he shares science-based tools for everyday life. Andrew Huberman answers listener questions on boosting deep slow-wave sleep with exercise, supplements, and avoiding caffeine, alcohol, and cannabis.

• “this is one reason why I supplement theanine for sleep. But if I'm feeling like I've been under a lot of stress... I might start taking a little bit of theanine”

  Why it counts as a recommendation: “this is one reason why I supplement theanine”
  Andrew Huberman · Huberman Lab · Mar 202101:22:08

  Said during "Tools for Managing Stress & Anxiety". The episode features Andrew Huberman: Professor of Neurobiology and Ophthalmology at Stanford School of Medicine and host of the Huberman Lab Podcast, where he translates neuroscience into practical, science-based tools. Huberman reframes stress as a generic, useful biological system and teaches real-time tools to dial it up or down on demand.