Swanson Ultra Suntheanine L-Theanine 100 mg 60 Caps

Product Label

Terms and Ingredient Definitions

Summary of Customer Ratings & Reviews

Swanson UltraSuntheanine L-Theanine

Overall Rating:

4.8 out of 5

Quality:

4.9 out of 5

Value:

4.9 out of 5

Effectiveness:

4.7 out of 5

Convenience:

4.9 out of 5

Satisfaction:

4.9 out of 5

37 of 38(97%)customers would recommend this product to a friend.

Write a Review

33 Get the most out of your life by de-stressing naturally with L-theanine! This unique amino acid has been extensively researched and shown to promote relaxation without causing drowsiness. It works by enhancing endocrine function, stimulating specific brain waves without inhibiting others. Swanson Ultra, featuring patented SunTheanine, offers a safe and effective alternative to help you keep up the pace with a smile on your face!

Overall Rating:

4.8 out of 5

Quality:

4.9 out of 5

Value:

4.9 out of 5

Effectiveness:

4.7 out of 5

Convenience:

4.9 out of 5

Satisfaction:

4.9 out of 5

37 of 38(97%)customers would recommend this product to a friend.

Write a Review

Customer Ratings & Reviews

Swanson UltraSuntheanine L-Theanine

Overall Rating:

4.8 out of 5

Quality:

4.9 out of 5

Value:

4.9 out of 5

Effectiveness:

4.7 out of 5

Convenience:

4.9 out of 5

Satisfaction:

4.9 out of 5

37 of 38(97%)customers would recommend this product to a friend.

Overall Rating:

4.8 out of 5

Quality:

4.9 out of 5

Value:

4.9 out of 5

Effectiveness:

4.7 out of 5

Convenience:

4.9 out of 5

Satisfaction:

4.9 out of 5

37 of 38(97%)customers would recommend this product to a friend.

Product Reviews

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:stayncalm

Location: tucson

Gender: Female

My Generation: Generation X (between 1965 and 1976)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I'm motivated by a company's sales, promotions and overall personality.

I've been using dietary supplements for: More than five years

Title:Great Product!!

Date:February 6, 2012

"I started using this product to help keep me relaxed during the day because I am a naturally uptight person.... It does what it says it does and I am very happy about that. I also added it with the Swanson brand Melatonin at night and I sleep well. I will continue to use this great product!"

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:sherry90401

Title:I love you, Swanson!!

Date:December 2, 2011

"These are as effective as the "name brands" and for a fraction of the cost."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:SMGen

Location: Santa Monica, CA

Gender: Female

My Generation: World War II Generation (before 1933)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I'm motivated by a company's sales, promotions and overall personality.

I've been using dietary supplements for: More than five years

Title:Combined with melatonin - Great!

Date:August 15, 2011

"My husband and I have been taking Suntheanine along with 1 mg or 3 mg or dual- release melatonin when we wake up about midnight, giving us another four or five hours of sleep in the second half of the night. We are most thankful for the good night's sleep this combination has been giving us!"

3 of 3 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:allwayswell

Location: Iowa

Gender: Male

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Multiple times during a month

Shopping style: I depend upon a company's thorough educational content before I buy.

I've been using dietary supplements for: My entire life

Top 1000 Contributor

Title:Great mood regulator!

Date:July 30, 2011

"Since including this in my supplement regimen, I have noticed definite diminished mood fluctuations.
Thinking is clearer and more focused. Read up on it and see if it fits what you are looking for in mood regulation. No noticed negative side effects."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:kat361

Gender: Female

My Generation: Millennial Generation (after 1976)

I've been using dietary supplements for: One to five years

Title:Excellent for calming nerves

Date:July 21, 2011

"I take this twice a day and it's wonderful for calming any uneasiness I may be feeling. It makes me a little drowsy after about 20 minutes but that doesn't last long, and then I just feel calm and content for quite a few hours. I take this morning and night along with 5-HTP."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:Thunderlake

Location: MI

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 3 to 6 months

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: More than five years

Title:Calming effect

Date:May 5, 2011

"I have been giving this supplement to my husband for years. It works! It calms him down and helps him sleep tremendously. I have always used the Swanson brand and find it better than some of the well known brands out there. Recently I have been taking it also - just one in the morning for my menopause. I have tried 5-HTP, melatonin and of the like and this works all of the time."

3 of 3 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:rosebud57

Location: PA

Gender: Female

I shop for dietary supplements: Multiple times during a month

Shopping style: I depend upon a company's thorough educational content before I buy.

I've been using dietary supplements for: My entire life

Title:Great Product

Date:December 20, 2010

"I use it every evening and have for many months. I like the convenience and the powder form in a capsule for mode of delivery. It works fast, too. I find it effective most of the time for my purposes."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:peace2all

Title:it works for me

Date:December 13, 2010

"I like the price. The product has benefits for me."

1 of 2 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:Whimsie

I've been using dietary supplements for: My entire life

Title:Great Purchase

Date:November 30, 2010

"Another product that really does what it says! You can feel the results of it in just a short period of time! Helps with sleep and taking the edge off!"

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:tapdancer

Location: San Diego

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 6 to 12 months

Shopping style: I depend upon a company's thorough educational content before I buy.

I've been using dietary supplements for: More than five years

Title:Great product

Date:November 30, 2010

"This is just what I needed to help me relax. I believe that this also helps me to sleep better without feeling groggy in the morning. I will definitely continue to takeL-Theanine."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:Xerxes

Location: North Carolina

Gender: Male

My Generation: Generation X (between 1965 and 1976)

I shop for dietary supplements: Once every 3 to 6 months

Shopping style: I'm mainly concerned about the company's policies and guarantees.

I've been using dietary supplements for: More than five years

Top 10 Contributor

Title:Really seems to work

Date:November 14, 2010

"No way to tell for sure, but it really does seem to help me concentrate when I have too much going on. I also take it when I wake up in the middle of the night with a lot on my mind stressing me out."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:LyndaRS

Location: New Mexico

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I depend upon a company's thorough educational content before I buy.

I've been using dietary supplements for: More than five years

Top 10 Contributor

Title:I WILL NEVER STOP TAKING THIS

Date:November 11, 2010

"For years I have looked for something that would help me relax and feel calm, without also causing me to feel groggy. I am one of those people who is highly succeptible to anything that could potentially cause drowsiness. I have tried just about everything you can think of, but only L-Theonine seems to give me a relaxed, calm state of mind, without even a hint of drowsiness. I feel "normal" when I take this... and that's exactly the way I want to feel."

6 of 6 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:moneyshopper

Location: Pasadena, MD

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I'm motivated by a company's sales, promotions and overall personality.

I've been using dietary supplements for: One to five years

Title:best price

Date:September 23, 2010

"I was purchasing this supplement at a local health store for triple the price! The Swanson brand works just as good as the other brand in the store, but much less expensive."

2 of 2 people found this review helpful.

Overall:

4 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:seanmjj

Location: Seattle

Gender: Male

Top 10 Contributor

Title:Green Tea Alternative

Date:June 20, 2010

"This has the same substance as green tea so a great alternative. I don't take this everyday but I always find it is good idea when I need to stay calm and relaxed."

Overall:

4 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

4 out of 5

Reviewed by:Humanitarian

Location: Reno, NV

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I depend upon a company's thorough educational content before I buy.

I've been using dietary supplements for: My entire life

Top 25 Contributor

Title:Not Quite Sure What I Expected

Date:May 6, 2010

"This product MAY be working, but it's difficult to tell for sure.

I have been taking two per day - once in the morning before breakfast and one before dinner. It's very subtle. I haven't tried taking two at a time. Perhaps if I did I'd notice something more profound. I'm only 120 pounds, so it should be enough. At least it won't knock you out or make you groggy."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:secretary

Location: Idaho

Gender: Female

My Generation: Swing Generation (between 1933 and 1945)

I shop for dietary supplements: Multiple times during a month

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: My entire life

Title:a lifesaver

Date:February 17, 2010

"I was taking Melatonin as a sleep aid, but it was not doing the job very well. When I added this product, it made all the difference. I sleep better, wake more alert and ready for my day. I wouldn't ever want to be without it."

5 of 5 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:grizzly

Location: Des Moines

Gender: Male

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I'm motivated by a company's sales, promotions and overall personality.

I've been using dietary supplements for: More than five years

Title:

Date:January 21, 2010

"I am very satisfied with this amino acid product.

I received the results that were anticipated."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:jgrenier

Location: Tallahassee, FL

Gender: Female

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: More than five years

Top 500 Contributor

Title:I'd Recommend this Product

Date:January 11, 2010

"I have enjoyed the benefits of this product and the convenience of taking only 2 small capsules a day. It is calming without making me sleepy."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

4 out of 5

Satisfaction:

5 out of 5

Reviewed by:kgirl

Gender: Female

My Generation: Millennial Generation (after 1976)

I shop for dietary supplements: Multiple times during a month

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: My entire life

Top 500 Contributor

Title:Wouldn't leave home without it!

Date:December 11, 2009

"I couldn't say enough about L-Theanine! It definitely takes the edge off and calms me when I need to be in social situations. I wouldn't leave home without it! It's very convenient to have in my purse and I know that it will work quickly. I will purchase this product again once my bottle runs out!"

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:jspin

Location: Chicago, IL

Gender: Male

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Multiple times during a month

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: More than five years

Title:One of my favorites

Date:November 11, 2009

"A friend recommended L-Theanine to me, and I've been pleased with it. It's a good value, as are other Swanson products.

I've always found Swanson's service to be very good. Products are delivered quickly and accurately. I've been a satisfied customer for years."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:sj01

Location: Florida

Gender: Female

My Generation: Millennial Generation (after 1976)

I shop for dietary supplements: Once every 1 to 3 months

I've been using dietary supplements for: One to five years

Top 250 Contributor

Title:The tea factor

Date:October 7, 2009

"As a frequent tea drinker I don't wig out about much. Call me biased, but I am convinced this supplement has helped my husband contain his temper. Since taking this, he has been much better at staying calm and cool durring aggravating moments. If I had known I could have slipped this into his cereal long ago! I recently noted that Lipton has added (on their box) that their tea has 10 mg (?) of theanine plus antioxidants. I recommend this supplemnt not only because no one (not even me)drinks 10 cups of tea a day, nor do they do it religiously. Plus- it's and effective product for stress. Why not? and who doesn't have stress in their life? As always DYODD."

1 of 1 people found this review helpful.

Overall:

2 out of 5

Quality:

4 out of 5

Value:

3 out of 5

Effectiveness:

2 out of 5

Convenience:

4 out of 5

Satisfaction:

3 out of 5

Reviewed by:jemfan

Location: Binghamton, NY

Gender: Female

My Generation: Generation X (between 1965 and 1976)

I shop for dietary supplements: Once every 3 to 6 months

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: One to five years

Title:Didn't Notice Any Difference

Date:August 23, 2009

"I had purchased this product for stress relief for myself and for relief from essential tremor for my mother. Neither of us noticed much of a difference from using this product."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:RickM

Location: NC

Gender: Male

My Generation: Millennial Generation (after 1976)

I shop for dietary supplements: Once every 3 to 6 months

Shopping style: I'm mainly concerned about the company's policies and guarantees.

I've been using dietary supplements for: Less than one year

Top 1000 Contributor

Title:Not much until you need it

Date:August 18, 2009

"I feel pretty much the same as always on a regular day after taking Theanine. However, on a stressful day it is amazing. If I had taken it before the stress it was not as severe. If I took it after the stress it reeled it in. I love Theanine."

1 of 1 people found this review helpful.

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

4 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:baa924

Location: Ohio

Gender: Female

My Generation: Swing Generation (between 1933 and 1945)

I shop for dietary supplements: Multiple times during a month

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: My entire life

Top 1000 Contributor

Title:

Date:August 10, 2009

"L-theanine is just one of many Swanson products I have used for years.I find the prices and quality are always some of the things I can always depend on.I also like the fact that I can count on delivery within 3 or 4 days."

Overall:

5 out of 5

Quality:

5 out of 5

Value:

5 out of 5

Effectiveness:

5 out of 5

Convenience:

5 out of 5

Satisfaction:

5 out of 5

Reviewed by:avaness

Location: NY

Gender: Male

My Generation: Baby Boomer Generation (between 1946 and 1964)

I shop for dietary supplements: Once every 1 to 3 months

Shopping style: I come to a website prepared to buy, and I want to checkout quickly.

I've been using dietary supplements for: One to five years

Title:Suntheanine is great....

Date:August 5, 2009

"As a long time user of 5-HTP, i recently discovered Suntheanine and as an addition to my regimen I am very pleased. I've scoured the web to find information and this product fits the bill on purity quality and price!"

1 of 1 people found this review helpful.

1-25 of 34

Swanson’s 7-Leaf Guarantee

Earning your trust is our first
and only priority.

↑ Top of Page

Swanson Ultra

Suntheanine L-Theanine

Product Label

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Swanson’s 7-Leaf Guarantee

Recently Viewed Items