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iHerb Customer Reviews



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  • Jarrow Formulas uses exclusively the Tryptopure brand of Tryptophan, manufactured by Ajinomoto of Japan.
  • Reviews | English
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    Knocks me out

    Posted by Reviewer1075233 on Jan 10, 2010

    In terms of any kind of insomnia, one pill will knock me out quickly, surprising how fast. However the next day I feel very heavy, a little drowsy, and a bit foggy through the morning. I havn`t noticed any kind of `mood enhancing` effect, but the physical heaviness I get the next day prevents me from being in much of a good mood. I was interested in this primarily to aid with depression, but it makes me way too tired/heavy to be taken regularily and function mentally at 100%.

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    Posted by Reviewer1338371 on Nov 16, 2008

    Product works fast, but doesn't last all night. I get about 4 hours sleep, then am wide awake.

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    Good quality, but not for me

    Posted by Reviewer1706966 on Jan 20, 2010

    This product is a good choice, but having tried a number of different serotonin precursors including 5-HTP I recommend you to better try pharmaGABA and/or Taurine if your main problem is anxiety, because this can make you more depressed due to its dampening effects over noradrenaline.

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    Difficult to say

    Posted by Reviewer1242553 on May 17, 2010

    I only used it once and found it ineffective so I didn't try it again.

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    Very good

    Posted by Reviewer1308797 on Nov 27, 2009

    very good

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    Items 1-5 of 5 total