Focus
Liver Health
Stress Relief

Thea

$20.00 USD

Calm Focus Without Sedation

Description

Thea provides 99%+ pure L-Theanine to support relaxation, focus, memory, and stress resilience. Formulated with no fillers or flow agents in a clean bovine gelatin capsule.

Quantity / Bottle

1 Bottle90 day supply$20.00 USD
Save 5%2 Pack180 day supply$38.00 USD
Save 10%3 Pack270 day supply$54.00 USD

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Stress management*
Calm attentiveness*
Focus and Memory*
Mood elevation*
Regulation of caffeine overstimulation*
Neuroprotection*
Liver protection*
Bile acid regulation*
Improved lipid metabolism*

*These Statements have not been evaluated by the Food and Drug Association, or Health Canada. These products are not meant to diagnose, treat, cure, or prevent any diseases.

Each bottle contains: 90 capsules
Servings per container: 90

Each capsule contains: L-Theanine: 500mg

Other ingredients: gelatin (bovine)

Take 1 capsule daily, with or without food, at any time of day.

Can be beneficial to take in conjunction with caffeinated beverages to avoid caffeine overstimulation & crash.

1. Wang D, Gao Q, Zhao G, Kan Z, Wang X, Wang H, Huang J, Wang T, Qian F, Ho CT, Wang Y. Protective Effect and Mechanism of Theanine on Lipopolysaccharide-Induced Inflammation and Acute Liver Injury in Mice. J Agric Food Chem. 2018 Jul 25;66(29):7674-7683. doi: 10.1021/acs.jafc.8b02293. Epub 2018 Jul 12. PMID: 29969892.

2. Li G, Ye Y, Kang J, Yao X, Zhang Y, Jiang W, Gao M, Dai Y, Xin Y, Wang Q, Yin Z, Luo L. l-Theanine prevents alcoholic liver injury through enhancing the antioxidant capability of hepatocytes. Food Chem Toxicol. 2012 Feb;50(2):363-72. doi: 10.1016/j.fct.2011.10.036. Epub 2011 Oct 14. PMID: 22019691.

3. Li MY, Liu HY, Wu DT, Kenaan A, Geng F, Li HB, Gunaratne A, Li H, Gan RY. L-Theanine: A Unique Functional Amino Acid in Tea (Camellia sinensis L.) With Multiple Health Benefits and Food Applications. Front Nutr. 2022 Apr 4;9:853846. doi: 10.3389/fnut.2022.853846. PMID: 35445053; PMCID: PMC9014247.

4. Liang J, Gu L, Liu X, Yan X, Bi X, Fan X, Zhou J, Lu S, Luo L, Yin Z. L-theanine prevents progression of nonalcoholic hepatic steatosis by regulating hepatocyte lipid metabolic pathways via the CaMKKβ-AMPK signaling pathway. Nutr Metab (Lond). 2022 Apr 15;19(1):29. doi: 10.1186/s12986-022-00664-6. PMID: 35428314; PMCID:
PMC9013079.

5. Zeng L, Lin L, Peng Y, Yuan D, Zhang S, Gong Z, Xiao W. l-Theanine attenuates liver aging by inhibiting advanced glycation end products in d-galactose-induced rats and reversing an imbalance of oxidative stress and inflammation. Exp Gerontol. 2020 Mar;131:110823. doi: 10.1016/j.exger.2019.110823. Epub 2019 Dec 31. PMID: 31899338.

6. Unno K, Iguchi K, Tanida N, Fujitani K, Takamori N, Yamamoto H, Ishii N, Nagano H, Nagashima T, Hara A, Shimoi K, Hoshino M. Ingestion of theanine, an amino acid in tea, suppresses psychosocial stress in mice. Exp Physiol. 2013 Jan;98(1):290-303. doi: 10.1113/expphysiol.2012.065532. Epub 2012 Jun 15. PMID: 22707502.

7. Peng WQ, Xiao G, Li BY, Guo YY, Guo L, Tang QQ. l-Theanine Activates the Browning of White Adipose Tissue Through the AMPK/α-Ketoglutarate/Prdm16 Axis and Ameliorates Diet-Induced Obesity in Mice. Diabetes. 2021 Jul;70(7):1458-1472. doi: 10.2337/db20-1210. Epub 2021 Apr 16. PMID: 33863801.

8. Yang L, Zhang L, Zhang P, Zhou Y, Huang X, Yan Q, Tan Z, Tang S, Wan F. Alterations in nutrient digestibility and performance of heat-stressed dairy cows by dietary L-theanine supplementation. Anim Nutr. 2022 Aug 11;11:350-358. doi: 10.1016/j.aninu.2022.08.002. PMID: 36329682; PMCID: PMC9618971.

9. Xu W, Kong Y, Zhang T, Gong Z, Xiao W. L-Theanine regulates lipid metabolism by modulating gut microbiota and bile acid metabolism. J Sci Food Agric. 2023 Feb;103(3):1283-1293. doi: 10.1002/jsfa.12222. Epub 2022 Sep 23. PMID: 36087337.

10. Zhang G, Miura Y, Yagasaki K. Effects of dietary powdered green tea and theanine on tumor growth and endogenous hyperlipidemia in hepatoma-bearing rats. Biosci Biotechnol Biochem. 2002 Apr;66(4):711-6. doi: 10.1271/bbb.66.711. PMID: 12036040.

*These statements are not approved or regulated by the FDA or Health Canada.

Thea

Main Benefits

Calm focus, cortisol control, and liver support in one.

Calm, focused alertness

Supports GABA to calm the nervous system without sedation — ideal alongside caffeine or on its own.

Less stress & cortisol

GABA suppresses cortisol overproduction — breaking the cycle of chronic stress and anxiety.

Liver protection

Boosts liver antioxidant capacity, reduces inflammatory markers, and protects against liver aging and injury.

Better metabolism

Activates fat browning via AMPK signalling and regulates lipid metabolism through bile acid modulation.

The Problem

Chronic stress suppresses GABA — and everything follows.

Modern life keeps cortisol chronically elevated — impairing focus, disrupting sleep, burdening the liver, and suppressing the metabolic processes that depend on a calm nervous system. Most relaxation supplements sedate rather than regulate.

Thea addresses this directly — using pure 99%+ L-Theanine to support GABA, reduce cortisol, and restore the calm alertness your nervous system was designed for.

✓Stimulates GABA production

✓Reduces cortisol & HPA axis overactivity

✓Hepatoprotective — lowers CRP & TNF-α

✓Regulates lipid metabolism & bile acids

The Science

Why your brain and liver need Thea.

01 · The Backstory

Theanine is more than a relaxation amino acid.

L-theanine is best known for calm focus — and those benefits are real. But the full picture is broader. Theanine has also been shown to lower cholesterol, regulate bile acids, protect the liver, improve metabolic function, and prevent obesity.

It's an abundant amino acid found predominantly in green tea, and one of the more versatile tools in the stack.

02 · The GABA Connection

Theanine calms the mind through GABA — and that matters more than you think.

Theanine suppresses excess serotonin by supporting GABA — the brain's primary inhibitory neurotransmitter. GABA, in turn, restrains the production of cortisol, which is chronically elevated in depression and anxiety.

This is the mechanism behind theanine's well-documented effects on calm alertness, mood elevation, and stress relief — working through the brain's own regulatory system rather than overriding it.

03 · Liver Protection

Theanine's most overlooked benefit: protecting the liver.

Multiple studies confirm L-theanine's hepatoprotective effects. It prevents alcoholic liver injury by boosting the antioxidant capacity of liver tissue, slows liver aging by reversing inflammation and oxidative stress, and inhibits the accumulation of advanced glycation end-products.

A third study found it protects against acute liver injury by normalising HPA axis hyperactivity and reducing key inflammatory markers including CRP, TNF-α, nitric oxide, and IL-10.

04 · Metabolism & Lipids

Theanine supports fat metabolism and healthy weight.

Theanine has been shown to activate the browning of white adipose tissue, regulate lipid metabolism through bile acid modulation, and prevent the progression of non-alcoholic hepatic steatosis — all via AMPK signalling pathways.

For those using it alongside caffeine, theanine also smooths out overstimulation and crash — making it a natural pairing with morning coffee or tea.

Our Thea

99%+ pure L-Theanine — no fillers or additives
Calm alertness without sedation — works with or without caffeine
Liver protection, lipid regulation, and metabolic support
Bovine gelatin capsule, 3rd-party tested for purity and contaminants

Other Theanine

Mixed into "relaxation blends" with underdosed theanine
Combined with sedating herbs — causes drowsiness, not calm
No awareness of liver, lipid, or metabolic benefits
Fillers, no third-party testing, lower purity grades

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› How does L-theanine support focus without causing drowsiness?

Theanine supports GABA activity, which calms the nervous system and reduces cortisol — creating relaxed alertness rather than sedation. It doesn't cause drowsiness at typical doses.

› Why take it with coffee?

Theanine blunts the overstimulation and crash commonly associated with caffeine. The combination of caffeine + theanine is one of the most studied and well-supported stacks for sustained, jitter-free focus.

› What are the liver benefits most people don't know about?

Studies show L-theanine increases antioxidant capacity in liver tissue, inhibits advanced glycation end-products that accelerate liver aging, normalizes HPA axis stress response, and lowers inflammatory markers including CRP and TNF-A.

› How does serotonin relate to why Ray Peat recommended theanine?

Dr. Peat viewed excess serotonin as metabolically suppressive. Theanine supports GABA while suppressing excess serotonin activity — fitting within the broader pro-metabolic framework of managing stress hormones.