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iHerb Customer Reviews



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Posted by Didokitty on Oct 13, 2013

Works quite well for mild anxiety and stress. I take L-Theanine occasionally, usually after lunch at work and it seems to help me focus better.

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I am sleeping better!

Posted by Reviewer2248925 on Mar 07, 2012

I have not been taking this product long enough to perceive all that it can do(that is the reason for the 4 out of 5 stars), but I am noticing that I am sleeping better and more soundly. Also, the anxiety, almost panic sometimes, seems to be better. The Suntheanine is the only one to get according to all that I have read. Thank you very much!

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Posted by Reviewer2986832 on Oct 17, 2011

is just a great product takes away all the stress with no tiredness gives me back my confidence.

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This is it

Posted by Reviewer2908751 on Nov 11, 2011

If you have trouble getting to sleep, try this stuff! My husband works night occasionally and this has been a godsend helping him sleep during the day. No side effects!

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This is amazing for curing my migraines

Posted by Reviewer1971797 on Sep 29, 2011

I take one right away when I start getting a migraine and usually it stops the headache in its tracks.

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Effective and mild

Posted by Reviewer1368652 on Oct 02, 2011

Being under lot of pressure and in stressful situation I found a good relieve remedy in this suppliment. It is very mild, no zombie effect if taken in the morning and can be taken occasionally whanever tension is occured. Definetely take some more whe I run out of bottle I have

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Posted by Reviewer2510653 on Feb 09, 2011

I am a grad student and this helps me to relax before giving my long in class presentations. Takes away the edge and helps me to stay focused!

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Doctor's Best, Suntheanine L-Theanine, 150 mg, 90 Veggie Caps (

Posted by Reviewer1286157 on May 17, 2010

Amazing international delivery from IHERB. Outstanding product at a good price. I use it ahead of major presentations and it certainly helps to combat tension and anxiety. Works even better in conjunction with GABA. United Kingdom

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best suntheanine

Posted by Reviewer2573043 on May 20, 2010

have tried other brands of L theanine but doctor,s Best works for me I am a lot calmer and energetic thanks Herb

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Excellent product

Posted by Reviewer3238104 on Oct 05, 2010

I have used this as a sleeping aid and it has helped very much. It doesn't leave me groggy or foggy! I recommend it!

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