Ingredient file // Flavor
Peppermint
Printed as “Ground Peppermint” on some labels. Same ingredient.
A minty flavor, not a dental treatment
Peppermint in kibble is dried, aromatic leaf used mainly for flavor. It adds little nutrition at a flavoring dose, and no dog trial shows that ground peppermint in food treats bad breath or settles an upset stomach.
- What it is
- Dried peppermint leaves, often ground, added to dog food for their distinctive mint aroma.
- Made from
- Harvested peppermint leaves
- Main job
- Mint flavor and aroma
- Typical amount
- Not published
- Watch for
- Concentrated peppermint oil is different
- Not the same as
- Peppermint essential oil
Our read // In our catalog
In 1 of every 72 foods we track
Share of foods that list it
1%
36 of the 2,595 foods with an ingredient list on file, from 5 brands. All dry dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 36.5. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 95% of foods.
Price per lb
Median of the cheapest bag price across 29 priced foods, 8% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
42%
of the foods that list it are from Holistic Select. 5 brands use it in total.
What it is
How it is made
Peppermint is grown for its aromatic foliage. Ground peppermint comes from harvested leaves that are cleaned, dried and crushed for use as an herb; it is distinct from oil extracted from the plant.1,6
- 01 // Source Peppermint leaves Growers harvest the fragrant foliage while its volatile oils give the leaves their characteristic scent.
- 02 // Process Cleaned and dried Leaves are cleaned and dried; excessive heat reduces the oils that carry their flavor.
- 03 // Process Crushed or ground Dry leaves are separated from stems and crushed or ground into an ingredient that mixes through food.
- 04 // Output Ground peppermint The dried leaf reaches the kibble plant as an aromatic herb, distinct from concentrated peppermint oil.
What is in it
Composition, dry matter
40.8
% NDF
Neutral detergent fiber in one dried-leaf sample. That is substantial in the herb itself, but a flavoring amount contributes little fiber to the finished food.
Why it is in the bag
What the manufacturer gets
-
01
Adds a mint scent
Peppermint leaves carry aromatic oils. An addition gives a recipe a recognizable mint note without making the herb a meaningful source of protein or fiber.1,2
-
02
Supports a breath claim
Brands put peppermint beside fresh-breath messaging. Its scent can mask odor briefly, but a label claim does not show that leaf powder improves a dog's teeth or gums.7,8
-
03
Adds flavor without bulk
Peppermint is used for aroma rather than bulk. Published sources do not disclose its usual kibble inclusion or price, so its cost impact cannot be judged from the label.1,2,7
How much No published dog feeding amount for ground peppermint leaves was found; EFSA assessed peppermint tincture, a different ingredient.2
Our read // The claims
What the evidence supports
Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.
-
Brands say
Peppermint keeps a dog's breath fresh
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A 12-dog crossover trial reduced breath sulfur compounds with a dental chew, but it did not isolate peppermint. Mint aroma might briefly mask odor; ground leaves in kibble have not been shown to treat its cause.4,7,8
-
Brands say
Peppermint settles a dog's upset stomach
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
Merck describes an antispasmodic mechanism for peppermint. A 48-hour laboratory experiment tested leaves in sheep rumen fluid, not dogs. Neither shows that the amount used to flavor kibble eases digestive symptoms.1,5
-
Brands say
Peppermint antioxidants protect dogs
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
Merck lists an antioxidant mechanism involving menthol in an animal colitis model. EFSA's 2025 assessment considered peppermint tincture as a feed flavor; it did not demonstrate antioxidant health effects from ground leaves in dogs.2,5
-
Owners say
Any peppermint in dog food is poisonous
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
ASPCA warns that large mint ingestions can cause vomiting and diarrhea, while a veterinary review says a small amount of plain leaf is unlikely to harm most healthy dogs. Concentrated oil presents a different exposure.3,8,9
Straight answers
What owners ask
-
Q01
Is it just filler?
NoPeppermint has a specific job: flavor. The leaf contains fiber and other nutrients, but a flavoring addition is too small to treat it as a meaningful fiber or protein source.1,2
-
Q02
Will it fix bad breath?
No proofThe mint smell might cover an odor briefly. In a 12-dog study, a dental chew improved measured breath odor, but that result cannot be assigned to peppermint. Persistent bad breath deserves a dental check.4,8
-
Q03
Is peppermint oil the same thing?
NoThe ingredient name points to the herb, often dried and ground. Essential oil concentrates its aromatic compounds and poses a separate exposure risk; do not add peppermint oil to a dog's food.8,9
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Usually listed with, share of the foods that list it
- Flaxseed 86%
- Peas 67%
- Chicken Fat 58%
- Dried Plain Beet Pulp 56%
- Potatoes 50%
- Chicken Meal 50%
- Pumpkin 42%
- Oatmeal 28%
- Lentils 28%
- Dried Egg 25%
- Canola Oil 25%
- Potato Flour 22%
Our read // On the bag
Read it as flavor, then check the food
Peppermint low on the ingredient list is an aroma choice, not a reason to buy or reject a food. Judge the main ingredients and the complete recipe first. If the bag promises better breath or digestion from peppermint, treat that as an unproven claim.
On labels as
Other names for this
Manufacturers do not all use the same wording. These all mean the same thing.
Sources
What we read
Checked September 1, 2026.
- 1 Mentha piperita (Peppermint) leaves as feed additive: In vitro ruminal gas, methane and carbon dioxide productions, nutrient degradability, and ruminal fermentation kinetics
- 2 Safety and efficacy of a feed additive consisting of a tincture derived from the leaves or the aerial parts of Mentha × piperita L. (peppermint tincture) for use in all animal species (FEFANA asbl)
- 3 Toxic and Non-toxic Plants: Mint
- 4 Effects of a novel dental chew on oral health outcomes, halitosis, and microbiota of adult dogs
- 5 Herbal Medicine in Veterinary Patients
- 6 Growing, Harvesting, and Drying Herbs
- 7 Premium Kibble with Peppermint for Dogs
- 8 Can Dogs Have Peppermint?
- 9 The Essentials of Essential Oils Around Pets
- 10 Paws Off Xylitol; It's Dangerous for Dogs