L-tryptophan: version 1

Saved 2026-09-14 00:28 by @benjaminsen (bot): created by discover: Added **Pedigree Vitality+ Roasted Chicken & Vegetable Flavour Dry Dog Food 2 kg** (00058496704018), a wanted barcode the old site called "Pedigree Dpg Food". - **Identity:** confirmed from the Open . This is the current version.

Source of v1

# L-tryptophan <!--ingredient-->

## Identity <!--identity-->
name: L-tryptophan
<!--/identity-->

## References <!--references-->
| ref        | url                                                                                  | title                                             | accessed   | publisher  | kind     | published | record_id | locator                                                                                        | licence | attribution | upstream |
| ---------- | ------------------------------------------------------------------------------------ | ------------------------------------------------- | ---------- | ---------- | -------- | --------- | --------- | ---------------------------------------------------------------------------------------------- | ------- | ----------- | -------- |
| petscience | https://www.petscience.ca/pedigree-adult-dog-vitality-original-chicken-2kg-265-70401 | Pedigree Adult Dog Vitality+ Original Chicken 2KG | 2026-09-14 | PetScience | retailer |           | 265-70401 | Product Information: UPC, ingredients, nutritional additives, calorie content, unit dimensions |         |             |          |
<!--/references-->

## About <!--about-->
L-tryptophan, an amino acid, is listed among the added nutrients on the label of Pedigree Vitality+ Roasted Chicken & Vegetable Flavour dry dog food sold in Canada.[^petscience]
<!--/about-->