Dyne Calming Soft Chews Supplement
Verified Jun 20, 2026
This is a calming soft chew supplement for dogs that uses L-tryptophan, L-theanine, valerian root, and ashwagandha to help support relaxation and normal stress responses. It also includes the probiotic Bifidobacterium longum to support the gut–brain axis, which can influence behavior and emotional well-being. The chews are flavored with chicken liver to make them more appealing for daily use in dogs of all sizes.
This is a thoughtfully designed calming supplement that combines several well-known nutraceuticals for stress support with a specific probiotic strain tied to the gut–brain axis. It may be useful for dogs who struggle with everyday stressors like travel, loud noises, or mild separation-related anxiety, especially when used alongside behavior modification. As with any supplement, it should be viewed as an adjunct to, not a replacement for, a complete diet and appropriate behavioral support.
The KibbleLab Score (1–10) is assessed from publicly available product data. Our evaluation is science-based, not marketing-based.
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At a Glance
KibbleLab Review
Strengths
- Includes multiple evidence-supported calming ingredients (L-tryptophan, L-theanine, valerian root, and KSM-66 ashwagandha) that act through different pathways to support relaxation without sedation.
- Provides Bifidobacterium longum at a stated level (1 billion CFU), a probiotic strain associated with gut–brain axis and stress-related behavior support in some studies.
- Soft chew format and chicken liver flavor can make it easier to administer consistently to most dogs.
- Formulated as a supplement, so it can be added to a wide range of complete diets without significantly changing the dog’s overall nutrition profile.
Considerations
- This is not a complete and balanced diet, so it should only be used alongside a nutritionally complete dog food, not as a meal replacement.
- Dogs with known chicken allergies may react to the natural chicken liver flavor and would need a different product.
- Herbal and amino acid supplements can interact with some medications or underlying conditions, so veterinary guidance is especially important for dogs with health issues or those already on behavior medications.
- Individual dogs can respond very differently to calming supplements; some may show clear benefit while others may have little noticeable change.
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
Bifidobacterium Longum
Bifidobacterium longum is a probiotic bacterium used in dog and cat foods or supplements to support a healthy intestinal microbiome, aid digestion, and help reduce episodes of gastrointestinal upset. Its benefits are strain- and dose-dependent and depend on viable CFUs at the time of feeding, so proper formulation and storage are important, and pet owners should consult their veterinarian before use in very young, elderly, or immunocompromised animals.
02
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.
03
Valerian Root
Valerian root is an herbal calming ingredient typically used in treats and supplements (not as a nutritional protein, vitamin or fiber) to help promote relaxation and reduce anxiety in dogs and cats through mild sedative/anxiolytic effects. Some cats may show an initial excited response followed by calmness; potential side effects include drowsiness, gastrointestinal upset, and interactions with other sedatives or certain medical conditions, so use under veterinary guidance and avoid in pregnant animals or pets with liver disease.
04
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.
05
Ashwagandha
Ashwagandha is an herbal adaptogen sometimes added to pet foods and supplements to support stress resilience, calming, and general wellness via bioactive withanolides rather than as a macronutrient. Some studies and anecdotal reports suggest potential calming and anti-inflammatory benefits for dogs and cats, but evidence is limited, dosing is not well standardized, and owners should consult their veterinarian because it can cause gastrointestinal upset, interact with sedatives, thyroid or immune-modulating drugs, and is generally avoided in pregnant animals.
Product Details & Brand
Product Specs
Brand
The PetAg brand encompasses the company’s broader range of nutritional supplements, milk replacers, and specialty diets for dogs, cats, small mammals, and exotic pets. It emphasizes clinically supported nutrition backed by decades of animal care expertise.
Visit PetAgManufacturer
PetAg maintains extensive quality control programs for its pet nutrition products, adhering to regulatory standards for pet food and supplements in the United States. Their facilities operate under FDA and AAFCO guidelines for animal feed safety and quality.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
PetAg Dyne Calming Soft Chews Supplement has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has PetAg ever been recalled?
We have no recalls on record for PetAg. 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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