A tryptophan metabolite that may be produced by GI bacteria or, rarely, it may be a marker for Hartnup's disease. Supplementation with tryptophan or 5-hydroxy-tryptophan (5HTP) may elevate levels, but a high value does not indicate the need to reduce or eliminate intake. Urine amino acid testing may confirm Hartnup’s disease.
- Malabsorption of tryptophan
- Investigate possible causes of malabsorption
- IgG Food Sensitivity
- Mucosal support
- Elimination diet
- Betaine HCl
- Digestive enzymes
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