Brain Feed Relax Natural Theanine 250mg Capsules deliver a potent dose of L-theanine — the calming amino acid found naturally in green tea — providing the relaxation benefits of up to 20 cups of tea in one convenient capsule. Ideal for managing daily stress, unwinding before bed or staying calm during acute stressors like public speaking or travel, this supplement promotes relaxation without causing sedation or mental fog. Manufactured naturally (not synthetic Suntheanine), Brain Feed Theanine is made in the UK to the highest standards with NutriProtect™ capsule technology and our four-point Purity Promise™.
Key Benefits of Relax Natural L-Theanine Supplement
250mg natural L-theanine for rapid stress relief and relaxation
Increases calming neurotransmitter GABA levels within 30 minutes
Boosts alpha brain waves for calm focus and creative clarity
No drowsiness or slowed reflexes — stay relaxed but alert
Perfect for daily stress or acute stressors like travel or public speaking
Key Ingredients and Purity Promise
Natural L-Theanine: Derived through fermentation, not synthetic; matches green tea’s natural profile
Purity Promise™: Rigorous testing, active ingredient guarantee, bio-active shelf-life protection
Take 1 capsule as needed to unwind
Use during times of stress, before sleep or before situations that require calm performance
Use the included 3-step self-assessment tool to track your relaxation progress at baseline, day 1 and day 30
FAQs About Brain Feed L-Theanine 250mg Capsules
What makes this theanine different?
Unlike many supplements using synthetic Suntheanine, ours is made via natural fermentation, non-GMO and tested for purity.
When should I take Brain Feed Theanine?
Take it anytime you need calm without drowsiness — ideal before sleep, travel, public speaking or stressful moments.
How quickly does it work?
Studies show L-theanine crosses the blood-brain barrier within 30 minutes, with effects lasting around 90 minutes.
Does it help with anxiety naturally?
Many use L-theanine as a natural stress and anxiety supplement, supporting calm focus by boosting GABA and alpha brain waves without sedation.
This product is not intended to diagnose, treat, cure, or prevent any disease or health condition. Results may vary from individual to individual. While we try to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Please check the bottle for the most up to date information.
Type
Capsule
Gender
Unisex
Suitable for
Vegan, Vegetarian
Age Range
15-35, 36-49, Over 50
Sustainability Committment
Landys Chemist is committed to creating a more sustainable world. As part of our commitment we only use recyclable materials for our packaging. That means no plastic waste and we're alway looking for ways to improve further. In addition we recycle the vast majority of our own waste. We also provide invoices electronically rather than on paper to reduce paper waste.
As an NHS business we work tirelessly to provide support to our local community with a particular focus on those most vulnerable and in need. In addition we also support a number of local charities in North West London to try and help create a more equitable society.
Here’s what our other customers thought...
100%
Lesley K.
Very happy to find a natural I-Theanine. I take 2/3 times per week to help the stressors of work. It's fast acting and there's no loss of cl
Calming and soothing without any side effects of the pharmaceutical drugs. It's a natural product of matcha tea. Recommend.
100%
GC
I've tried a few, not noticed a huge amount of effects. But I definitely feel a drop if I stop taking the Brain Feed Theanine. Excellent product
80%
Malika Esselmi
It's very good for the money
100%
Sharon Roden
Alcohol dependence
60%
Bluenose
I have insomnia for many years, after reading the reviews I thought I would give them a try. Unfortunately they did not help with my sleep and when I
...do finally drop of my deep sleep is only about 1 hour each night.
20%
A.Constantine
I question what's in these as they do not work like my usual brand. Is this a con?
20%
Ayanami L.
I have seen people say that it works well so I purchased to try it out but after I took this I would have a lot of nightmares at night, when I stopped
... taking it I didn't have any more nightmares, I repeated the trial a few times and each time I would have nightmares which led to me not daring to take it again. Undeniably this did make me sleep faster but the nightmares were not a good experience, I don't know if this is a problem with my personal constitution or not, theoretically this GABA shouldn't cause the above results but it did happen. An FYI for others.
100%
Tia J.
Well done brainfeed. You've managed to help me with my anxiety something else other theanine brands dont do. It doesnt give me nausea like the ot
...hers. This is not a paid review and I can prove it. Lovely natural product.
100%
Min
After taking this, i feel to vomit. I threw it away all
100%
Deividas88
Can't sleep because all the time overthinking and stressed for nex day at work. But when i drink this tablet before sleep i have amazing dreams a
Works very well but it is very expensive compared to the usual versions which are not natural extracts.
100%
nadim
Helps relaxation capsules bit bigger than I thought although am finding more calm when take these
100%
Antony Kai
very helpful and works in about half an hour
100%
Liz
Good stuff
100%
Noush
Really great for someone starting out on a dose of l-theanine. I feel like I sleep so much better, I am less irritable and overwhelmed and my mood is
...generally increased. I highly recommend. Will have to take for longer to see long-term effects but I can see a huge improvement in my ADHD symptoms.
100%
Stupot
As with any supplement that makes a claim to produce an effect on the brain or body, you should always be aware that any effects are subjective and an
...ecdotal, as such I always keep an open mind with these things. As such, my review is based on my own experiences.
I suffer from situational anxieties as well as adult ADHD, so I was interested to see if these could help. Despite my initial scepticism, I was surprised to notice a significant effect. However, it's been difficult to judge their effectiveness in anxiety-inducing situations, as the various lockdowns had all but removed them from my life. I certainly feel more relaxed when using these, which in most cases is a good thing, as I'm rarely properly relaxed mentally. This might not always be a good thing as I noticed that my driving was affected, such that I was less aware of my surroundings.
The capsules themselves are very easy to swallow and have no noticeable flavour.
60%
Adam
I have taken Theanine before and felt it difficult to gauge any effect. Same with this brand. Whatever I thought could be an effect could also easily
...be that of Placebo. I'm looking for something and so I synthesise the effect. There is no effect that persuades me otherwise. They do, however, tend to make my mouth dry and make me want to drink more tea...
100%
Margaret7
This is a good quality supplement. Theanine is good for relaxation and also to balance you physiologically if you are taking caffeine or drinking caff
...eine-containing beverages. I take it when I am going through periods of stress and also when I need to take caffeine to chase away brain fog when I need to focus (don't drink cola, energy drinks, tea or coffee...). I find it very effective in both bringing calmness and also preventing any unwanted side effects from taking the odd caffeine tablet. The capsules are normal sized and easy to swallow - and I am very pleased with them..
100%
👑 SueMeSueYou 👑
This product has helped me supplement my healthy diet. It speeded up your metabolism. It really works. I recommend it. I usually took it in the evenin
