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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.
  • Customer Ratings

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    Reviews | English
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    Talk to your Doctor First

    Posted by Reviewer1857681 on Feb 14, 2010

    The first few days I took the tryptophan, it helped me sleep deeper. After that I began to experience some side effects such as racing heart and some kind of perception change that is difficult to describe - just feeling detached from reality. Both were quite unsettling. Definitely see your Doctor before you start this, and make sure you monitor the side effects with your Doctor.

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    This stuff rocks!

    Posted by Reviewer2308213 on Jun 19, 2009

    I take two every night before I go to sleep. It helps me to sleep and feel relaxed the next day. It is the only natural product that consistently gives me that "feeling of well-being." I really like this and recommend it. It is so much less expensive here on iherb than at my local health food store. It has also helped with depression and anxiety.

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    Top quality Tryptophan

    Posted by Reviewer2193776 on Nov 24, 2007

    I just switched a week ago to this tryptophan from another brand...and I'm feeling better. That could be many factors (this isn't exactly a double-blind study) but I am convinced this is one of the better quality products out there. I will buy again.

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    Posted by Reviewer2648100 on Mar 13, 2008

    Always on hand, always works well. Sleep like a baby, very nice. No after effects.

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    works wonders

    Posted by Reviewer2807130 on Aug 07, 2009

    wonderful stuff use 1000mg of it with calcium/mag for sleep and for depression.Was able to reduce the amount of SRI pharmaceutical I was taking by half!No joke.

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    Excelente Produto

    Posted by 4645022619282576315 on Mar 27, 2015

    O produto é de excelente qualidade e preço. A entrega demora um pouco devido aos tramites no Brasil, mas chegou bem embalado.

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    Fantastic Product!

    Posted by Reviewer2116758 on Apr 26, 2009

    Helps me sleep through the night and improves my overall mood.

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    Good Product

    Posted by Reviewer2057592 on May 01, 2009

    I take 2 capsules 30 minutes before going to bed for insomnia. This brand works very well for me.

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    Mrs. Mary Murphy

    Posted by Reviewer3182088 on Feb 08, 2009

    I have trouble sleeping due to a stroke and this product is great. I would recommend it to anyone who has trouble sleeping. I like the Doctor's Best in what I buy. Thanks

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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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