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iHerb Customer Reviews



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excellent ltheanine

Posted by Reviewer2201094 on Dec 06, 2009

I found that doctor's best worked faster than the previous ltheanine that i used. The effects also seem to stay in my system longer.

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Best type of theanine

Posted by Reviewer1265520 on Nov 19, 2010

Always make sure to get 'Suntheanine' and not just 'theanine'... the suntheanine is a higher quality and more absorbable form of theanine. The dosage is perfect as well.

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Great for social anxiety and irritability

Posted by ALoren on Sep 28, 2013

Theanine helps me to cope with the anxiety I experience whenever I am faced with a social situation. It makes me calm, happy and more sociable. It's also good at calming my irritability during those times of month, or whenever I take too much caffeine. I used to take the Source Naturals brand but prefer this as it contains less Theanine (too much can make me a bit spacey).

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Doctor's Best Suntheanine L-Theanine

Posted by Reviewer2258021 on Dec 02, 2009

We have used this product before and yes it does work, The change is not dramatic, you just realize on reflecting, that every thing flows along smoothly and issues can be resolved in a calm rational manner.

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love it

Posted by Reviewer2371998 on Aug 20, 2009

The world is ok as long as I have this.

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Works great !

Posted by OrganicGirl on May 29, 2013

L-Theanine is used for pets in case of excessive barking, anxiety, fear, bad listening etc. When I buy L-Theanine for dogs in Holland it will cost me about 40 dollars a month ! I saved a lot of money buying Doctor's Best L-Theanine at iHerb. After 7 months of using I can get my dog's attention when she is barking, she listens better and has no fear of thunder, lightning and even fireworks anymore. She also has much more self-confidence. That's a result of training but without L-Theanine it was not possible to train. I'm very happy with the results and surprised it's so effective. Before using I did not believe it could work but I was wrong !! Feel free to visit my page (click on my name) for more reviews.

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Placebo effect or not- this seems to be working

Posted by 5376051982772157390 on Jun 18, 2013

Never felt this calm in a long while, though anxiety is still there, but the labored anxious breathing is much better now. Benzo only makes me tired and agitated but l-theanine definitely makes me calmer without the drowsiness. For me, this is the most effective supplement so far but I'll be experimenting dosages and even brand to see what works best. So far so good...

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Works great for anxiety

Posted by Reviewer1495755 on Jun 08, 2010

This does work really well for my anxiety, however, next time I will purchase the chewables (by another brand) as it takes approx. 15-20 minutes for these to kick in. Also, when I take more than 1 a day I do tend to feel a bit drowsy which I don't like (but often my anxiety returns later in the afternoon and I feel I need to take another one). Otherwise, these are very effective. I am a fan of Doctor's Best products because of their quality and I love I-herb's prices. :)

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Works Well

Posted by Reviewer1799903 on Jan 04, 2011

Works well for mild to moderate anxiety and stress. Does not make me drowsy. Not super-strong, but it does have a mild calming effect that helps noticeably. Worth trying if you have anxiety issues.

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good product

Posted by Reviewer2154310 on Jan 30, 2013

helped my husband to get rid of sleeping pills. Also my sleep problems solved with this product last fall. 3 capsules in empty stomach and we got peaceful sleep.

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