Soft Chew Calming Supplement
Verified Aug 28, 2026
A soft chew calming supplement for dogs that uses the amino acids L-tryptophan and L-theanine, along with bovine colostrum, to help support relaxation and balanced behavior. The chew base includes ingredients like chickpeas, potatoes, flax seed, and salmon oil, with a turkey flavor to make it more appealing. It is meant as a daily supplement given in addition to your dog’s regular complete diet.
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Solid Option
This is a thoughtfully formulated calming supplement that combines L-tryptophan, L-theanine, and bovine colostrum, all of which are commonly used to support relaxation in dogs. The soft chew format and turkey flavor make it easier to give to most dogs as a daily add-on. It’s best suited for otherwise healthy adult dogs who need mild support with everyday stress or environmental triggers, in combination with behavior and environmental management.
Computed from 3 of 3 applicable checks. Missing data is skipped, never counted against a food.
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
Where these benefits come from
Benefits the manufacturer highlights in its own product marketing. KibbleLab lists them for reference and does not verify these claims.KibbleLab Review
Strengths
- Uses L-tryptophan and L-theanine, two well-known amino acids often used to support calm behavior in dogs.
- Includes bovine colostrum, which provides bioactive compounds and antioxidant properties that may help with stress responses.
- Soft chew format with turkey flavor can make daily dosing easier for many dogs.
- Salmon oil and flax seed add beneficial fats, which can be a nice bonus to the base diet.
Considerations
- This is a supplement, not a complete diet, so it must be given alongside a nutritionally balanced dog food.
- Contains dairy-derived ingredients and turkey, which may be an issue if your dog has known food allergies to these proteins.
- Brewers dried yeast is included and may not suit dogs with yeast sensitivities or certain skin issues.
- Any calming supplement should be used along with behavior and environmental strategies, not as a stand-alone solution for severe anxiety.
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
Colostrum
Colostrum is the antibody‑rich first milk from mammals used in pet foods and supplements to provide immune support and gut‑health benefits through concentrated proteins, immunoglobulins, growth factors and other bioactive compounds. It may aid neonatal passive immunity, intestinal barrier function and recovery during illness or stress in dogs and cats, but efficacy depends on source and processing, and it can cause digestive upset or allergic reactions in animals with dairy sensitivity and should not replace proper neonatal care or vaccinations.
04
Brewer's Yeast
Brewer's yeast (deactivated Saccharomyces cerevisiae) is commonly used in dog and cat foods as a flavor enhancer and supplemental source of protein, B‑complex vitamins, trace minerals and immunomodulating components such as beta‑glucans. It can support skin, coat and general nutritional status, but may cause gastrointestinal upset or allergic reactions in yeast‑sensitive pets, is not a live probiotic, and should be used cautiously in animals prone to purine‑related issues or those receiving antifungal medications.
05
Carrot
Carrot is used in pet foods as a vegetable ingredient providing fiber, moisture, texture and antioxidant nutrients such as beta‑carotene (a provitamin A), vitamin K, vitamin C and potassium, contributing to palatability and digestive bulk. Cooked carrots are more digestible and release more beta‑carotene, but cats cannot efficiently convert beta‑carotene to active vitamin A so carrots are more nutritionally useful for dogs than as a primary vitamin A source for cats; they should be fed in moderation due to natural sugars and should be offered in appropriately sized pieces to avoid choking.
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Product Details & Brand
Product Specs
Brand
A family-made line of dry and wet dog and cat food produced in Perham, Minnesota, spanning the NutriSource, PureVita, Element Series, and Choice ranges. Built around its Good 4 Life supplement system and vertically integrated manufacturing.
Manufacturer
PSC is a nonprofit that Accredits pet companies on their environmental and social impact, through third-party verification. Tuffy's Pet Foods, Inc. is a PSC Accredited business. View profile
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
No recall is listed for NutriSource Soft Chew Calming Supplement.
Source: FDA animal food recall listings back to January 2019 · Checked daily, last on Aug 31, 2026
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Frequently Asked Questions
Has NutriSource ever been recalled?
We have no recalls on record for NutriSource. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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 listings. Last verified dates reflect our most recent data check. We track the FDA's animal food recall listings back to January 2019 and publish every pet food recall automatically. A filing that isn't pet food may not appear here.
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