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iHerb Customer Reviews



Savings of: $14.22 (47% off)

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Customer Ratings

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really works

Posted by Reviewer1944730 on Sep 03, 2010

calm and alert - just like the description!

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Posted by Reviewer3110125 on Sep 07, 2010

I'm a big fan of Theanine for calming. I'm unfortunately prone to anxiety, and theanine subdues it effectively.

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SUntheanine l-theanine

Posted by Reviewer2445419 on Sep 15, 2010

Sine I have taken these tablets I am so much better. My mood is better and I sleep before I woke up every night

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Excellent product for relaxation

Posted by Reviewer1655235 on Dec 01, 2013

Noticeably reduces the irritating effects of caffeine.

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Posted by 4764124855596619814 on Jan 19, 2013

Worth every Penny. I have been suffering from ADHD for a long time now and am using this instead of medication. I just wish there are high dosage capsules for the more serious conditions like mine

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Posted by 5699502493395107983 on Jun 26, 2013

Very quality product! Special thanks for support order!

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Good product.

Posted by Reviewer1296537 on Aug 02, 2013

Good product. Seems to improve mood and aleretness and doesn't cause drowsiness. Excellent price.

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Really is the BEST L-Suntheanine

Posted by Reviewer1996189 on Oct 07, 2012

This brand of L-Suntheanine gives you a nice, relaxed feeling without feeling groggy or tired. When I ran out of my first bottle of this, I tried another brand just for the heck of it and I felt it didn't work even though it has the same ingredients except for a few inactive ingredients. I just tossed that one away ($20 bucks down the drain) and I'm reordering Doctor's Best. I will never try another brand of L-Suntheanine. I highly recommend this brand!

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Good product

Posted by 4643953135474567533 on Nov 13, 2013

Much better focus at gym with this. I recommend!

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Assisting with Calm and Sleep

Posted by 5469296419755366821 on Oct 06, 2012

This is helping as a precursor to the body making GABA and as it supposedly crosses the blood-brain barrier it helps to ensure I feel calmer and sleep better

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