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.
*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.
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
Thea
Main Benefits
Calm focus, cortisol control, and liver support in one.
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Calm, focused alertness
Supports GABA to calm the nervous system without sedation — ideal alongside caffeine or on its own.
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Less stress & cortisol
GABA suppresses cortisol overproduction — breaking the cycle of chronic stress and anxiety.
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Liver protection
Boosts liver antioxidant capacity, reduces inflammatory markers, and protects against liver aging and injury.
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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.
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.
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.
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.
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.
Compare
Not just Theanine. Thea.
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
›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.
THEANINE
Products very well-sourced with unwanted fillers and synergistically compatible,
Living in Australia a long way but packaging always survives the trip to get to me in one piece.
Really like the product, definitely noticed improved sleep, but didn’t realize it was in gelatin capsules. I don’t eat animal products
On a daily basis so would prefer vegetarian option
I’m so glad that I have started taking the Thea supplement. Life is hard and it’s good to have help! I’m able to stay focused on tasks plus finding it easier to relax at end of day, and then get a good sleep. Plus I’m confident in the product - no weird stuff, no fillers or harmful chemicals. Just pure help for my body and mind.
A supplement that actually works
I only take 2 supps - Magnesium and L-Theanine. Sleeping much more deeply and soundly. Ships quick too.
I love this brand!
Steady
I have been taking this as a part of my morning stack alongside my coffee and I notice it’s helped me be focused and on task. I also notice a good sustained energy throughout my morning which I appreciate.
Solid product
Better than other L-Theanine’s I’ve had before. I like the higher dosage vs most brands and made in USA without fillers and garbage. Look forward to trying a few of the other products!
Very calming
This product is INCREDIBLY calming! I love taking this before bed; it helps me fall asleep and stay asleep. It is also great for enhancing productivity when working. I do computer programming, so consuming this helps with processing information more efficiently. This is also excellent for curbing crashes from caffeine!
Calm
Added this (1cap, once daily) and have noticed I'm less likely to stress out over events and situations and more able to calmly think through to appropriate response. Sleep has improved.
Thanks!
Outstanding
I recently tried the Lifeblud L-Theanine supplement and was quite impressed with the results. I had been dealing with significant daytime anxiety and restless nights, often tossing and turning or waking up too early. After seeing a recommendation on social media, I decided to give Lifeblud a go, especially since they were offering a discount that was due to expire soon.
Starting with just one capsule before bed, I was pleasantly surprised to find myself sleeping deeply without any interruptions. The calming effect was noticeable, and it has now become part of my morning routine as well, taken alongside my tea. I can confidently say that this supplement has made a positive difference in managing my anxiety and improving my sleep quality. I would definitely recommend Lifeblud's L-Theanine to anyone looking for a natural way to calm their mind and enhance their sleep.
Buffers stress like none else
This product is incredible for lowering cortisol and helping the body become more resilient to the daily stress of modern life. I have been using this product for months now, and it definitely moves the needle with stress and overall feelings of peace and groundedness. I recommend this to every single one of my clients dealing with stress and they love it too!
Reduces stress
I’ve been taking this off and on for many months now. Recently started taking it regularly, definitely helps to reduce stress and feel more calm.
The best
One of the most effective supplements I have- I can literally feel my stress levels come down when I take it and it happens immediately. I also love the liver supporting effects. Highly recommend!