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Natural Factors - Stress-Relax Suntheanine L-Theanine, 100mg, 120 Chewable Tablets

4.5 out of 5 stars 1,161 ratings
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Brand Natural Factors
Flavour Green Tea
Primary supplement type Suntheanine L-Theanine
Unit count 120 Count
Item form Tablet
Item weight 0.6 Pounds
Item dimensions L x W x H 7.8 x 7.8 x 12.1 Centimetres
Special ingredients Amino Acid
Diet type Gluten Free
Product benefits Relaxation

About this item

  • PURE L-THEANINE: Suntheanine contains pure L-Theanine, a unique amino acid found in green tea that is emerging as the premier natural product to support mental calmness and relaxation.
  • QUALITY YOU CAN TRUST: Suntheanine is produced via a proprietary enzymatic process, which helps to ensure essentially pure L-Theanine for maximum effectiveness.
  • EASY CHEWABLE TABLET: Natural Factors Stress-Relax Suntheanine L-Theanine comes in a tasty tropical fruit-flavored chewable tablet, making it easy to get what your body needs.
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Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product.

Product description

Suntheanine contains pure L-Theanine, a unique amino acid found in green tea that is emerging as the premier natural product to support mental calmness and relaxation. Suntheanine is produced via a proprietary enzymatic process, guaranteeing essentially pure L-Theanine for maximum effectiveness. In a tasty tropical fruit-flavored chewable tablet. Recommended by Dr. Michael Murray, one of the world?s leading experts on natural medicine.

Product information

Technical Details

Manufacturer ‎Natural Factors
Place of Business ‎Coquitlam, BC V3K 6Y2, CA
Item model number ‎2837
Product Dimensions ‎7.77 x 7.77 x 12.07 cm; 272.16 g
ASIN ‎B00B95I5GQ

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Natural Factors - Stress-Relax Suntheanine L-Theanine, 100mg, 120 Chewable Tablets

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Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 7.77 x 7.77 x 12.07 cm; 272.16 g
  • Date First Available ‏ : ‎ July 8 2013
  • Manufacturer ‏ : ‎ Natural Factors
  • Place of Business ‏ : ‎ Coquitlam, BC V3K 6Y2, CA
  • ASIN ‏ : ‎ B00B95I5GQ
  • Item model number ‏ : ‎ 2837
  • Customer Reviews:
    4.5 out of 5 stars 1,161 ratings

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Customer reviews

4.5 out of 5 stars
1,161 global ratings

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Customers say

Customers like the effectiveness and calming effect of the nutritional supplement. They mention it works wonderfully and helps with mild anxiety. Some say it goes well with a healthy bedtime routine of not being on electronic devices or screen time.

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EffectivenessCalming effect
7 customers mention "Effectiveness"7 positive0 negative

Customers are satisfied with the effectiveness of the nutritional supplement. They mention it works wonderfully and helps tremendously.

"Despite the terrible texture and flavour, these work wonderful." Read more

"They don't completely take my anxiety away but they help tremendously...." Read more

"Wonderful product" Read more

"Great product, poor shipping..." Read more

6 customers mention "Calming effect"6 positive0 negative

Customers like the calming effect of the product. They mention it helps with relaxation, mild anxiety, and helps them fall asleep faster. Some say it goes well with a healthy bedtime routine of not being on electronic devices or screen time.

"...It also, can help with mild anxiety. It goes well with a healthy bedtime routine of not being on electronic devices or screen time just before bed...." Read more

"...Any stress, anxiety, or negative feelings seem to melt away about 20 mins after chewing two...." Read more

"If you suffer from anxiety like I do this is a great way to help calm it. I was able to get off Ativan and replace it with this natrual product" Read more

"L Theanine is excellent for calming. It's so great to have it in a chewable form that a child can take." Read more

Top reviews from Canada

  • Lynn M.
    5.0 out of 5 stars Mental Calm -Helps with relaxation
    Reviewed in Canada on August 10, 2022
    Verified Purchase
    I like this product for it's gentle feeling of mental calm when trying to fall asleep. I find that I sometimes ruminate about things when trying to fall asleep and this product help to minimize this. It also, can help with mild anxiety. It goes well with a healthy bedtime routine of not being on electronic devices or screen time just before bed. I recommend this product.
    4 people found this helpful
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  • Victoria
    5.0 out of 5 stars They work... but taste like chalk
    Reviewed in Canada on April 10, 2023
    Verified Purchase
    Despite the terrible texture and flavour, these work wonderful.
    Helpful
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  • Elise
    5.0 out of 5 stars A MUST for stress and anxiety!
    Reviewed in Canada on September 26, 2022
    Verified Purchase
    These are one of the supplements I will happily take for likely the rest of my life! Any stress, anxiety, or negative feelings seem to melt away about 20 mins after chewing two. Combined with 100 or so mg of caffeine and your able to deeply focus on any work without the cortisol spike that often happens from drinking coffee. 10/10 would recommend to anyone!
    6 people found this helpful
    Helpful
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  • Dirty Dream Catcher
    3.0 out of 5 stars There's an alternative
    Reviewed in Canada on November 1, 2023
    Verified Purchase
    I was recommended L-Theanine for my daughter (epilepsy and on the spectrum); long story short, these chewables are chalky and I feel guilty giving them to her in the am before the school bus - but I've found a smaller orange flavored chewable with 125mg (this product has only 100mg) that I would recommend to parents concerned about chalky tablets.
    Helpful
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  • alanna
    5.0 out of 5 stars They do help
    Reviewed in Canada on October 25, 2021
    Verified Purchase
    They don't completely take my anxiety away but they help tremendously. I was having debilitating anxiety that was making it hard to even live day to day. These help so much. I only take 1 and half in the morning and that seems to be good for me. No side effects or anything like that which I was worried about. I breastfeed and needed something natural to help my anxiety.
    4 people found this helpful
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  • Pauline McEwan
    4.0 out of 5 stars Great product, poor shipping
    Reviewed in Canada on November 4, 2024
    Verified Purchase
    Ordered this item, showed it would be delivered next day, but did not arrive till Monday, makes me wonder why I pay for Prime membership!
    Helpful
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  • Missy
    5.0 out of 5 stars Works like a charm
    Reviewed in Canada on May 11, 2020
    Verified Purchase
    If you suffer from anxiety like I do this is a great way to help calm it. I was able to get off Ativan and replace it with this natrual product
    22 people found this helpful
    Helpful
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  • AmyE
    5.0 out of 5 stars Wonderful
    Reviewed in Canada on September 8, 2018
    Verified Purchase
    L Theanine is excellent for calming. It's so great to have it in a chewable form that a child can take.
    3 people found this helpful
    Helpful
     Report

Top reviews from other countries

  • May
    5.0 out of 5 stars Good, natural sleep aid
    Reviewed in the United States on April 14, 2025
    Verified Purchase
    Excellent product. I take this at night. Helps me sleep soundly, whether I take it with any other product or by itself. I've found no side effects at all. I use the chewable and it's a nice mint taste.
    Report
  • Heather W.
    5.0 out of 5 stars Seems to do what I bought it for.
    Reviewed in the United States on July 9, 2016
    Verified Purchase
    My son, who has never been diagnosed with an Autism Spectrum Disorder, still displays some Autistic tendencies. This is actually something that seems to run in my family with the men, just prior to puberty. Then when puberty hits, it seems to go away. When he gets overstimulated or has had a stressful day, he makes loud humming, explosive noises that serve the purpose of helping him to de-stress. That said, it's very annoying and also, he's already kind of the "weird kid" at school due to having some hearing loss that causes his voice to sound funny to the other kids. It is very hard for him to keep it together while at school, so he does not make those inappropriate noises and draw more attention to himself. The end result is that he comes home and makes them for hours to get them out of his system. He was also having trouble falling asleep every night due to being "scared" for reasons he could not explain. "Just scared." Nothing in particular he could point to. He was experiencing generalized anxiety. His dad suffers from this as well. The lack of sleep was very concerning to me. It was so bad that at 10 years old, we were occasionally have to resort to a Benadryl to help him get to sleep on school nights, after hours of relaxation techniques did nothing. I found this and, based on the reviews of others with children who have similar issues, decided to try it.

    We have been through three or four bottles now. Honestly, I only notice that it's working when my son starts relentlessly making those noises and I ask him when the last time he took his "relaxing vitamin" was. His answer is always, "Oh, I forgot. I haven't taken it since yesterday (or some similar timeline)". If he misses a dose or two, the noises come back. As long as he's taking it, every once in a while, I might hear him make a small sound briefly, but then he stops. If he stops taking it or misses doses, he again has difficulty falling asleep due to fears he cannot put a name to and he begins loudly and relentlessly making self-stimulating noises.

    He has to take the max (2 tablet) dose twice per day to get the effect. He weighs close to a hundred pounds, so that may be why. We started him out at one tablet before bed and that seemed to help the anxiety somewhat but it wasn't really cutting it. It wasn't until we upped him to 2 tablets twice a day (three times a day is the max) that we noticed the noises stop and the nightly trouble falling asleep ceased.

    He has not experienced any side effects of sleepiness during the day, or any other side effects that we can tell, which was my biggest fear in giving him a supplement that was unfamiliar to me. It's pricey, no doubt, but the benefits are worth it to me. I can avoid taking him to the doctor and running the risk of getting him a diagnosis that will follow him for life and possibly put on meds that could cause permanent side-effects like facial tics. He's a very smart kid who does well in school and this was a good alternative to medical intervention.

    My son doesn't seem to mind the taste, but I do wish it came in swallow tablets. The tablets are about the size of a quarter but also slightly thicker so they cannot be swallowed. I suppose you could break them into fourths and try to swallow them but I don't know.
    Report
  • A. Jarrell
    5.0 out of 5 stars Good for the price
    Reviewed in the United States on March 12, 2024
    Verified Purchase
    These will remind you of TUMs tablets, or Rolaids. They are round, chalky, and white with a vaguely 'fruity' taste. Suntheanine is the best form of L-Theanine for efficacy, which is why I purchased this brand. I also prefer a chewable for no other reason that...I just do. Anyway, this has the calming effect you want, easy to take, don't taste too bad, and the price is favorable. You get a lot for your money, which is rare these days. I've used L-Theanine for anxiety for about 5 years. One thing you need to know is to use the smallest effective dose. This is not a 'more is better' supplement. I'm an average sized woman and 50mg is my morning and evening dose. More can make your head feel 'weird' but 50 is a sweet spot for me. Give it a try if you have trouble winding down at night, or to smooth out the caffeine jitters. This works synergistically with caffeine for good focus without feeling spun up.
    Report
  • Kendra
    5.0 out of 5 stars Great product for stress
    Reviewed in the United States on November 23, 2024
    Verified Purchase
    As a neurospicy person, I use various methods to regulate and calm my central nervous system. L-Theanine is a great supplement for calming and reducing cortisol levels. I like the flavor and the tablets are not chalky. I use these throughout the day to manage daily stress.
    Report
  • Maleko
    5.0 out of 5 stars These taste good and i do feel better, just more alert, focused during the day.
    Reviewed in the United States on March 1, 2015
    Verified Purchase
    First of all, I bought these for those days when you're just not feeling that outgoing, as i heard it works great for depression and anxiety. Well, i don't really have either, but i do feel sluggish at times. I was a little fooled because i have purchased suntheanine products for my dog and it works and really keeps her calm during fireworks, so i thought it would have that sleepy effect. Well, i'm only eating one a day, but no sleepiness and i sleep, wake up fine, no sleepy after affects like you get sometimes with 5 htp or melatonin. I also take L-Tyrosine and Gaba, but haven't noticed much from these products. I just feel better, after eating these suntheanine tablets. I don't know what it is. But i do enjoy drinking green tea as well, which Suntheanine is supposedly derived from. Oh and these are called chewable, but they're pretty hard, i enjoy the flavor but just let them dissolve on my tongue which takes awhile. They're about the size of a quarter but thicker, so if you dont like that, then this isn't your product. Also to make them palatable, they do have i think 1.5gms of sugar per tab, 3gms per serving size. If you're not supposed to eat sugar it's good to know. The standard serving size it says is 2 tablets to give you 200mg of suntheanine. I feel fine with one, so i'm just going to stick with that as it's not the cheapest supplement. But 5 stars for now, because the product does seem to work.
    Report

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