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iHerb Customer Reviews

$14.94

$24.49

Savings of: $9.55 (39% off)

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focus

Posted by Reviewer1867632 on Oct 05, 2013

Increases my concentration.

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hmm

Posted by 4769067026539156536 on Apr 22, 2016

nothing changes

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SO so

Posted by Reviewer1544707 on Aug 20, 2010

I cannot tell if this has done anything for me.

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