L-Tryptophan

An essential amino acid and precursor to serotonin. May support calming behavior and sleep regulation.

Source: NRC, 2006

Found in 86 dog foods

Showing top 20 by GoodKibble Score

Blue Buffalo

Blue Buffalo True Solutions Adult Small Breed Care Chicken & Oatmeal

Protein 28%Fat 16%

Fromm

Puppy Gold

Protein 27%Fat 18%

Nulo

FreeStyle High-Protein Kibble Limited+ Lamb Recipe

Protein 28%Fat 16%

Fromm

Classic Puppy Dog Food

Protein 28%Fat 14%

Hill's Science Diet

Puppy Small Bites Chicken & Brown Rice Recipe

Protein 27.8%Fat 19%

Hill's Science Diet

Puppy Small & Mini Chicken & Brown Rice Recipe

Protein 28.9%Fat 19.7%

Hill's Science Diet

Puppy Chicken & Brown Rice Recipe

Protein 27.8%Fat 19%

Hill's Science Diet

Puppy Lamb Meal & Brown Rice Recipe

Protein 28.3%Fat 19.5%

Fromm

Heartland Gold Puppy

Protein 27%Fat 18%

Blue Buffalo

Blue Buffalo Blue Natural Veterinary Diet Adult W+M Weight Management + Mobility Support

Protein 30%Fat 13%

Fromm

Small Breed Adult Gold

Protein 26%Fat 17%

Hill's Science Diet

Puppy Sensitive Stomach & Skin Salmon & Brown Rice Recipe

Protein 30.7%Fat 19.8%

Hill's Prescription Diet

i/d Puppy Chicken Flavor Dog Food

Protein 30.2%Fat 20.1%

Hill's Science Diet

Puppy Large Breed Lamb Meal & Brown Rice Recipe

Protein 27.9%Fat 17.8%

Hill's Prescription Diet

c/d Multicare + Metabolic Weight Dry Dog Food

Protein 27.5%Fat 12.5%

Blue Buffalo

Blue Buffalo True Solutions Adult Weight Control Chicken & Oatmeal

Protein 28%Fat 14%

Hill's Prescription Diet

ONC Care with Chicken Dry Dog Food

Protein 30.8%Fat 26.4%

Blue Buffalo

Blue Buffalo True Solutions Adult Large Breed Care Chicken & Oatmeal

Protein 24%Fat 14%

Natural Balance

Chicken Barley Recipe

Protein 24%Fat 14%

Fromm

Adult Gold

Protein 25%Fat 16%

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