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Clinical Updates
L-tryptophan and 5-Hydroxy-L-tryptophan (5-HTP)
Parkinson's Disease: 5-HTP for Sleep?
August 23, 2021
Can supplementation with 5-HTP reduce sleep disturbances in people with Parkinson's disease? See what a recent study found in the What It Does section of our L-Tryptophan and 5-HTP Supplements Review.
Also see our answer to the question: Do supplements help with Parkinson's disease treatment or prevention?
Also see our answer to the question: Do supplements help with Parkinson's disease treatment or prevention?
Dog Overdoses on Supplement
January 18, 2019
Be sure to keep your supplements away from pets -- especially if they taste sweet. A dog overdosed on its owner's fast-dissolving tablets, putting it in a coma, according to a recent report. For details, see the Concerns and Cautions section of the L-tryptophan and 5-HTP Supplements Review.
5-HTP Concern
August 03, 2013
Three cases of eosinophilia-myalgia syndrome (EMS) have been reported among people taking 5-HTP, a compound related to L-tryptophan. EMS is a debilitating immune condition which has occurred in people taking L-tryptophan, but there were no previous reports of it being caused by 5-HTP. Get the details in the the updated review article on L-Tryptophan and 5-HTP >>
L-Tryptophan -- Still a Problem?
November 19, 2011
A woman in Illinois taking L-tryptophan for insomnia developed the same serious problems that resulted in L-tryptophan being temporarily removed from the market several years ago. Is L-tryptophan any safer now than it was before? For more information, see the update to the L-Tryptophan and 5-HTP Review Article.
