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iHerb Customer Reviews



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  • Doctor's Best uses exclusively the Tryptopure brand of Tryptophan, manufactured by Ajinomoto of Japan.
  • Reviews | English
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    Excellent L-Tryptophan

    Posted by Reviewer1625105 on Sep 22, 2008

    This is a great brand for L-tryptophan -- I've tried several brands and this is excellent for the price.

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    Posted by Reviewer2867013 on Oct 17, 2008

    These capsules help me to sleep and, if anything, they help my wife even more. I am also noticing a mild elevation of my mood. I am very satisfied with this product. Thank you, Joe

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    Exceptional product

    Posted by Reviewer3271529 on Dec 03, 2007

    I began to see noticeable results in about 1 week. It doesn't work miracles but I was less agitated within my day. The tryptoPure in the product, I believe, makes the difference.

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    Good product.

    Posted by Reviewer2549269 on Mar 11, 2008

    So glad we can get L-Tryptophan again. Great as a sleep aid.

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    Like night and day

    Posted by 5460024890231655683 on Aug 05, 2016

    I have used this product for over two years now for chronic fatigue symptoms caused by IBS. A true game changer for me!! I take them with C-vitamin (important!) before bedtime and wake up feeling energized. Awesome product!

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    Posted by 5095463777286283297 on Apr 08, 2016

    Great product. Good results

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    Posted by Reviewer1948093 on Apr 16, 2016

    Once again

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    Works Very Well

    Posted by Reviewer2366867 on Jun 01, 2016

    I have tried many different brands of L-Tryptophan over the years but this one has stuck with me. I have several things going on which really inhibit my ability to relax or sleep. I begin taking these an hour or two before actually going to bed. I usually take one and then another about an hour later along with other things - sometimes Valerian (liquid) and sometimes 5htp. Within about fifteen or twenty minutes of going to bed, I can actually fall asleep. Such relief!

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    Effective without side effects

    Posted by 5473203115191728683 on Jun 09, 2016

    Very calming, there are no unpleasant side effects. For now I am very happy although I use it only 3 weeks ...

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    Great relaxant

    Posted by Reviewer2166233 on Dec 08, 2007

    Good relaxing effect. Wish there was extended release!

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    Items 21-30 of 95 total

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