Calming Chews Chicken Flavor Supplement
Verified May 4, 2026
A soft chew calming supplement for adult dogs, made with dried chicken for flavor and the amino acids L-tryptophan and L-theanine to support relaxation during everyday stressful situations. The chew format is designed to be a tasty, easy way to give these calming ingredients, and uses wheat and millet flours as the main bases. This is intended as a supplement alongside a complete and balanced dog food, not as a primary diet.
This is a well-formulated calming supplement for adult dogs that relies on L-tryptophan and L-theanine, two commonly used ingredients for supporting relaxation, delivered in a palatable soft chew with real chicken for flavor. It’s best suited for otherwise healthy adult dogs who experience normal, occasional stress and whose owners prefer a chew rather than a capsule or liquid. As with any supplement, it should be used in addition to a balanced diet and with guidance from your veterinarian, especially if your dog has existing medical conditions or is on other medications.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
KibbleLab may earn an affiliate commission when you buy through a link. No one can pay for a higher score, or to change what we recommend for your pet.
At a Glance
KibbleLab Review
Strengths
- Includes L-tryptophan and L-theanine, two well-known ingredients commonly used to support calm behavior in dogs.
- Soft chew format with dried chicken and natural flavors can make it easy for most dogs to accept without pill-hiding tricks.
- Uses safe, well-established preservatives like citric acid and mixed tocopherols rather than artificial colors or flavor enhancers.
- Backed by a major brand and carries the National Animal Supplement Council (NASC) Quality Seal, which indicates adherence to certain manufacturing and quality standards for supplements.
Considerations
- Contains chicken and wheat flour, which can be problem ingredients for dogs with known chicken or wheat allergies or sensitivities.
- This is a supplement only and does not provide complete and balanced nutrition, so it must be given alongside a regular, balanced dog food.
- Dogs with medical conditions (especially liver, kidney, or behavioral/neurologic issues) or those on other medications should have these chews cleared with their veterinarian before use, as calming ingredients can interact with some drugs.
- The base includes millet and wheat flours and glycerin, which add calories; for very small dogs or those prone to weight gain, total daily treats and supplements should be monitored.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
L-Tryptophan
L‑Tryptophan is an essential amino acid used in pet foods to meet amino acid needs and, when supplemented, to support production of neurotransmitters such as serotonin and melatonin. It is important for protein synthesis and may help with mood, sleep, or mild anxiety in some dogs and cats, but supplemental doses should be used under veterinary guidance since diet usually supplies adequate amounts and improperly manufactured supplements have on rare occasions caused adverse effects.
02
L-Theanine
L‑Theanine is a naturally occurring amino acid commonly added to pet foods and supplements as a calming/functional ingredient to help reduce stress and promote relaxation without sedation. It has shown promise in dogs (and to a lesser extent cats) for easing situational anxiety and improving calmness, but effects can vary, proper dosing is important, and owners should consult their veterinarian—especially if the pet is on medications or has health conditions—because it is an adjunct to, not a replacement for, behavioral training or medical treatment.
03
Canola Oil
Canola oil is used in pet foods as a concentrated fat source and palatability enhancer that supplies energy and essential fatty acids—mainly omega‑6 (linoleic acid) and some omega‑3 (ALA)—and aids absorption of fat‑soluble vitamins. It can support skin and coat condition when balanced with animal fats or supplemental omega‑3s, but is calorie‑dense so must be portioned to avoid weight gain, does not provide species‑specific fats such as arachidonic acid for cats, and must be kept fresh to prevent oxidation.
04
Citric Acid
Citric acid is commonly used in pet foods as a preservative, pH adjuster and mild flavoring agent that helps inhibit microbial growth and chelate metals to slow fat oxidation and preserve color and freshness. It provides no nutritional value for dogs or cats and is generally safe at the low levels used in commercial diets, though concentrated forms or excessive intake can cause gastrointestinal upset or decreased palatability in sensitive animals.
05
Chicken
Chicken is a common animal-based protein in dog and cat foods, supplying essential amino acids, B vitamins, and energy-dense fats that support muscle maintenance, growth, and overall health; for cats it also contributes toward dietary taurine but must be present in sufficient amounts or provided via supplementation. It is prized for its digestibility and palatability, though some pets develop sensitivities or allergies to chicken, and nutritional value and safety depend on ingredient quality and processing—raw chicken carries pathogen risks and whole bones can pose choking or GI hazards.
Product Details & Brand
Product Specs
Brand
Greenies is a dental treat brand for dogs and cats under Mars Petcare. It focuses on oral health, offering chews and treats designed to help reduce plaque and tartar buildup and freshen breath. Many Greenies products carry the Veterinary Oral Health Council (VOHC) Seal of Acceptance for plaque and/or tartar control, and the brand is frequently recommended by veterinarians for dental care support.
Visit GreeniesManufacturer
Mars Petcare operates large-scale manufacturing facilities in North America, Europe, Asia-Pacific, and Latin America with formal quality and food safety systems modeled on human food standards. Facilities follow HACCP-based programs, Good Manufacturing Practices, and are routinely audited for compliance with local regulatory bodies (e.g., FDA and USDA in the U.S., FEDIAF-related standards in Europe). Mars maintains in‑house research and development centers, employs veterinarians and pet nutrition scientists, and conducts digestibility and palatability studies and AAFCO feeding trials for many of its complete-and-balanced diets.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Greenies Calming Chews Chicken Flavor Supplement has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Greenies ever been recalled?
We have no recalls on record for Greenies. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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