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$12.85

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  • Jarrow Formulas uses exclusively the Tryptopure brand of Tryptophan, manufactured by Ajinomoto of Japan.
  • Customer Ratings

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    Reviews | English
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    Doesn't work!

    Posted by 5311742311727924689 on Jun 04, 2015

    Doesn't make you sleep better, waste of money!

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    2 people found the following review helpful

    can take tryptophan

    Posted by Reviewer2543360 on May 06, 2009

    I use to take tryptophan years ago for sleep ,it allawys worked great. Recently tried Jarrow L- Trypto. Made me sleep through the night but feel druged for half the next day, I mean bad ,like poisoned. no matter what time of day I take it with or without food same result. Don't know if the formula has changed or its some change in my chemistry.

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    5 people found the following review helpful

    L-Trytophan

    Posted by Reviewer3285982 on Aug 26, 2008

    It really caused a great deal of stomach pain, and I had a worse night sleep than I did before taking it. Could just be me, but I had to throw it away after taking one capsule.

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    2 people found the following review helpful

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