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Swanson Ultra

Suntheanine L-Theanine

Suntheanine L-Theanine

Item:  SWU110

  • Suntheanine L-Theanine works gently to promote relaxation without drowsiness*

  • Supports endocrine function*

  • A unique amino acid derived from green tea leaves

100 mg 60 Veg Caps
Veg Caps Size: 1

Now $8.09
Extra 10% Off
Was $8.99
MSRP $13.99
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In Stock

Supplement Facts

Serving Size 1 Veggie Capsule

  Amount Per Serving % Daily Value
Suntheanine® L-Theanine 100 mg *

*Daily Value not established.

Other ingredients: Brown rice flour, hypromellose (vegetable capsule), magnesium stearate.

Suggested Use: As a dietary supplement, take one veggie capsule one to two times per day with water before meals.

Suntheanine® is a registered trademark of Taiyo International, Inc.

Relative Size

Printable Size Guide

Shipping Weight

.11 lbs

  • Suntheanine L-Theanine works gently to promote relaxation without drowsiness*

  • Supports endocrine function*

  • A unique amino acid derived from green tea leaves

Get the most out of your life by de-stressing with Suntheanine L-Theanine! This unique amino acid has been extensively researched and shown to promote relaxation without causing drowsiness.* Swanson Ultra, featuring patented SunTheanine, offers a safe and effective alternative to help you keep up the pace with a smile on your face!

Swanson Ultra Suntheanine L-Theanine Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Suntheanine L-Theanine is rated 4.8 out of 5 by 132.
Rated 5 out of 5 by from Suntheanine I'm so happy to have found a supplement that helps me focus at work and helps me to remain calm. It's a fabulous two-fer!
Date published: 2017-07-11
Rated 5 out of 5 by from Very Nice ! Even with a short sleep, sleep quality improves and you get deep sleep.
Date published: 2017-06-23
Rated 5 out of 5 by from Brain awake! A great way to help my brain wake up in am. I take every morning with my sun tea, which is high in this product. Keeps me alert without the caffeine jitters.
Date published: 2016-07-20
Rated 5 out of 5 by from Great value and very effective! Thanks Swanson for a great value on L-Theanine! You sell it for so much cheaper than other sources and the quality is excellent. I am sleeping longer and more soundly when take this before bed and it is truly calming at other times.
Date published: 2016-05-25
Rated 4 out of 5 by from theanine I have a busy brain which is hard to turn off at the end of the day, I use this amino to shorten the time it takes to go to sleep after a hectic day, I find nothing will work 100% for me always but this has a better average than many things I have tried in the past
Date published: 2016-03-08
Rated 5 out of 5 by from wonderful product This product is great, it helps me not to be to anxious and it's natural, the price is a lot lower when I buy online than at any store
Date published: 2015-11-16
Rated 5 out of 5 by from Great price, great product! It works very well for my mother and myself and we've been using it for over a year now.
Date published: 2015-10-12
Rated 5 out of 5 by from great stuff Suntheanine is the pure version of theanine and is amazing stuff.
Date published: 2015-03-21
Rated 5 out of 5 by from Does what it says I find I get a restful sleep after taking this supplement.
Date published: 2015-02-04
Rated 5 out of 5 by from calming I take 2 L-Theanine at night about 1/2 hr before I go to bed. I got the idea from Dr Oz. It is calming and lulls me into sleep. The price is right with Swansons.
Date published: 2014-12-12
Rated 4 out of 5 by from Suntheanine L-Theanine Surprisingly enough, this doesn't make me sleepy, so I don't take this at night. Instead, I take it in the morning, and it seems to relax my mind and help me focus more. It can be on the pricy side, so try to get it on sale or BOGO.
Date published: 2014-11-27
Rated 5 out of 5 by from good for relaxatuib I use this product to help calm my system. It does not work as a sleep aid for me, but keeps me feeling more peaceful in general..
Date published: 2014-10-04
Rated 5 out of 5 by from Relax before bed I have been taking theanine for quite some time, at bed time, since I had read it helped with relaxation. I have a hard time sleeping, & like to use natural products to help various health conditions if possible. Theanine helps me wind down before bed & may contribute to better sleep.
Date published: 2014-08-31
Rated 5 out of 5 by from One Caveat I felt calmer and more peaceful on this supplement, generally more balanced, and I loved it. But I took it for about 60 days, one each morning. I don't think that is recommended. I started experiencing shortness of breath, which disappeared about two weeks after I stopped taking it. I still use it occasionally at bedtime to quiet my busy mind and have a good sleep. I do recommend it for that.
Date published: 2014-05-03
Rated 5 out of 5 by from Excellent for a good nights sleep! Perfect if you have trouble falling asleep or staying asleep! It works great for me, my husband and my adult daughter...we all love it and can't believe how great it works!! Try it...its great!
Date published: 2014-04-03
Rated 5 out of 5 by from Love this Calms my nerves without making me tired
Date published: 2014-03-22
Rated 5 out of 5 by from Wife finds it helpful My wife has used theanine for awhile. Says it helps her focus. I'd say that's so.
Date published: 2014-02-19
Rated 5 out of 5 by from It works. I found this to help with stress and was effective right away. I would take one or two in the am. I would also take one during the day if I felt stressed and it helped. Made me feel much calmer and helped improve my mood. Worked better than Sam-e. I would definitely recommend it.
Date published: 2014-02-09
Rated 5 out of 5 by from Sleep Aid I take Suntheanine every night for a good, restful sleep.
Date published: 2014-01-22
Date published: 2014-01-16
Rated 5 out of 5 by from Perfect chill pill This really helps me during stressful times, immediately after a workout, or falling back to sleep in the middle of the night. My one wish would be that Swanson start to offer larger sizes of this and other products at a discount.
Date published: 2013-11-27
Rated 5 out of 5 by from love this supplement I use this to calm my mind & it really helps. I usually take this at bedtime.Great product.I haven't tried any other products because this one works for me.
Date published: 2013-11-04
Rated 5 out of 5 by from Helps Me with Stress This product really helps to change my mood when I am stressed. It also helped my niece during an extremely rough time in her life.
Date published: 2013-10-26
Rated 4 out of 5 by from not bad..but Having used GABA for a few years and developing a little resistance to it, I thought I would temporarily switch to this for stress. This has more of a groggy side effect in the beginning but it went away. The GABA seems to be a "cleaner" product for me and my brain, but this is a decent alternative. GABA is a 5 leaf this is a 4 leaf.
Date published: 2013-10-20
Rated 5 out of 5 by from Exceptional One of the best products on the market today and at an exceptional value.
Date published: 2013-09-28
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