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L-Theanine Capsules - 200mg

Pure, strong and potent L form of theanine from high grade material

184 reviews9410020
- Best Price
Only 10.8p per capsule
In stock
In Stock

Key features

  • Heavily researched amino acid
  • Found most commonly in tea leaves
  • May promote calm without drowsiness
  • Commonly taken alongside 5 HTP
L-Theanine 200mg capsule view
Capsule Size
21mm x 7mm two-piece capsule
  • Description
  • Product Information
  • Feefo Reviews Reviews

L-Theanine is an amino acid found predominantly in tea.  When you have a stressful moment or a shock a 'cup of tea' one of the first things that come to mind but why? The reason is thought to be L-Theanine which is believed to promote a calming and relaxing influence.

If you are a coffee drinker it's likely that at some point you will have drunk too much and experienced a 'hyper' effect.  It is very doubtful that you have ever experienced the same thing with tea even though it contains a lot of caffeine and the reason why is thought to be theanine. It is thought that theanine works to offset caffeine's effect but without causing any drowsiness. It is also a supplement which is not known to be addictive.

Pure, strong and high grade material

Just Vitamins L-Theanine provides 200mg of this high-grade amino acid in a vegetarian capsule.

Nutritional Information
One L-Theanine 200mg capsule provides:
 L-Theanine 200mg.
Allergen Advice
Any allergens are highlighted in bold in the ingredients list.
List of Ingredients
L-Theanine, Hydroxypropylmethyl Cellulose, Stoneground Rice Flour, Rice Hulls, Rice Extract (with Rice Hulls, Gum Arabic, Sunflower Oil)
Dosage / Suggested Intake
Swallow one or two L-Theanine 200mg capsules per day with food or as directed by your health professional.
Legal Category
Food Supplement


Customer Reviews for L-Theanine 200mg

The views expressed below are the personal opinion of Just Vitamins customers. Just Vitamins does not endorse these views, nor should they be regarded as health claims or medical advice. All reviews are collected and verified as genuine by a 3rd party called Feefo.

Overall product rating 9.4 / 10 - 184 customers have independently reviewed and recommend L-Theanine from 184 reviews (showing latest 50 reviews)
Review Date
Review Details
Service rating: Delivery arrived quick enough but the products arrived with short shelf life, that is not acceptable. As for the product I purchased to help with sleep but in fact the opposite happened. I tried for 3 days with Magnesium but after 3 night of absolutely no sleep I gave up.
Product: Does not work for help with sleep, in fact they kept me a wake. Some calming effect but not for me.
Service rating: Excellent product and delivered promptly. Pouch delivered through the letterbox.
Product: Excellent product to help calm anxiety.
Friendly attention and on time delivery.
Delivery was very quick and efficient, I’m a big fan of the packaging as it’s compact, saves me space, and it fit through the letterbox! Customer service was spot on, I had no issues with anything
Service rating: Excellent service and fantastic prices for top quality products
Product: Amazing product. Recommended to others. Really helping with my anxiety. Helps take the edge off whilst allowing me to stay alert and carry on with my day.
quick useful email support
Speedy delivery, fab prices
Fast delivery. Quality item
Prompt service and value for money product.
Good and expedient service.
Service rating: Great price and excellent fast delivery. Will certainly be buying from them again soon.
Product: Great value for money. This supplement helps with my anxiety
Service rating: Rigth on time,good product
Product: Lowered my anxiety to a decent leve
Service rating: Always reliable and trustworthy
Excellent service and products. Thank you.
Product: Calm me down. Good stuff to take...
Service rating: I found the 400mg of l theanine too strong for myself and had already purchased 3 pouches in the 3-4-2 but just vitamins were so kind and understanding and gave me a full refund on return of them. Because of how lovely they were and knowing I still wanted to take l theanine i purchased the 200mg which I’ve been taking for weeks now and find very helpful in calming my overactive mind. I think once I’ve gotten use to the 200mg for many months I might try the 400mg but purchase just 1 bag and see how I get on. I cannot fault just vitamins customer service care, I truly felt looked after. Thank you.
Product: I’m a novice user of l theanine so I prefer this lower dose of 200mg. I’ve taken it for weeks now and it really helps calm my overactive mind. I’d highly recommend for anyone who is suffering with anxiety and too many thoughts whirring around your head like a washing machine. I’d reccommend starting with lower strength and building up to 400mg if your new to l th
Service rating: Really fabulous. My usual stockist let me down, and these supplements are so important to me, so I found Just Vitamins and thought I'd give them a try. Great product, even better price than expected, fast delivery and letterbox-friendly packaging, so I didn't even have to be home to take the parcel.
Product: Really great supplement, exactly as destined and the correct dose for my needs. I take it for generalised anxiety alongside rhodiola rosea in a nootropic stack. L-theanine is one of the few that doesn't cause heavy sedation or fogginess, so you maintain mental clarity, but remain calm. Also alleviates the constant racing heart I get from my reactive hypoglycemia condition. Life-changing supplement!
Service rating: Very simple, straightforward process, very easy to order, received my order promptly and I am totally happy with their quality. Fabulous service!!
Product: I think they are a good quality supplement. I have been suffering from anxiety and nervousness and these help to calm me down.
Service rating: Satisfied with items and delivery service will recommend the company to friends.
Product: Good for sleep problems and depression.
Service rating: Very good in delivering watt they promiss to
Product: i only left 1 star because i think its always room 4 improvement in everything,very nice
Good value, prompt delivery.
Service rating: Everything was excellent.
Product: Good product, seems to work as well as any other.
Service rating: I always buy my vitamins from here.
Great products.
Product: Can’t do without it!
Amazing for my wellbeing.
Service rating: Easy, fast, good product
Product: Good product and price. Fast delivery
Service rating: Prompt.
Product: Effective alternative to prescription betablockers.
Nice and fast
Service rating: Very good service each time I've used them.
Product: Very effective I use them regularly.
Great products and speedy delivery.
Delivery of my order received promptly and well packaged. Quality products much cheaper than I have been paying at health shops. Very satisfied customer and will order from them again.
Service rating: quick delivery, effective service
Product: Help me with study, or could be placebo.
Still, I rate them.
Service rating: Great service. Smooth and easy.
Product: Struggle with anxiety on a daily basis. This helps to some extent. Calms my body down and relieves stress.
Service rating: Excellent product Well packed,arrives quickly after order and slips through letter box no probs
Product: Does what I bought them for.Stops the little grey cells overworking when I’m trying to relax and calms the anxious fluttering when I’m stressed
Service rating: Prompt and efficient service
Product: I am finding them useful for the control of anxiety
Service rating: trusted and reliable
Product: I have no comments to make.
Service rating: Speedy delivery.
Product: I take it for fibromyalgia symptoms. It's a harmless equivalent to Valium - relaxes and winds me down. I take it an hour before bedtime to help ensure a good night's sleep.
Excellent products, intelligent packaging
Service rating: Excellent service, product arrived early and in perfect condition.
Product: I take these tablets now and then to improve mental focus and to help me to relax. It works very well, and seems to be a high quality product.
Service rating: Quick delivery and reasonable prices.

I've been taking L-Theanine and a caffeine supplement for over 12 months now. Help me kick start the day and remain focussed without the caffeine jitters.

Also during times of anxiety L-Theanine and 5-HTP from this site have help members of my family through bereavement and other tough times.
Product: I've been taking L-Theanine and a caffeine supplement for over 12 months now. Help me kick start the day and remain focussed without the caffeine jitters.

Also during times of anxiety L-Theanine and 5-HTP from this site have help members of my family through bereavement and other tough times.
Good product,price and delivery
Service rating: Prompt delivery good product well priced
Product: Product works for me helps me concentrate and relax.
I have bought supplements from this company for a number of years and have always been very happy, good service and good quality.
Quick accurate efficient delivery
Service rating: delivery was fine. not too slow either.
Product: treatment of negative symptoms of schizophrenia at 400mg. people now call me a savant!
Very helpful customer service and product arrived quickly.
Service rating: Great service, very prompt. Good value product that works well
Product: Good value, first time I have used these tablets and they work well. Not a dramatic difference but definitely noticeable reduction in stress symptoms
Service rating: Excellent service. Speedy delivery. Highly recommended!
Product: Not felt any benefit at the moment. I'll try capsules for another week to see how it goes.
Very quick delivery and a good price, great service
Service rating: Fast service and great product!
Product: Improves concentration, sleep and anxiety.
Fast, efficient.
Service rating: No Complaints...good idea to have the packages that fit through the letter box.
Product: OK but nothing spectacular
Very quick and pleased so far

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