Calming Soft Chews Supplement for Cats
Verified Jun 30, 2026
This is a soft chew calming supplement for adult cats that uses a blend of thiamine (vitamin B1), L-tryptophan, and L-theanine along with herbal components like chamomile-related green tea extract to support relaxation. The chews are built on a brewers yeast and whitefish base, with natural preservatives and no corn or artificial flavors or dyes. It’s intended for situations where your cat may be stressed, such as travel, loud noises, or vet visits.
As a calming supplement, this product combines several well-known calming nutrients and amino acids in a palatable soft chew format, which many cats accept more readily than tablets. The formula avoids artificial colors and flavors and uses natural preservatives, which is a plus for sensitive cats. It’s best used as an adjunct to behavioral and environmental strategies for stress, rather than as a stand-alone solution for ongoing anxiety issues.
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
- Contains multiple calming compounds (thiamine, L-tryptophan, and L-theanine) that are commonly used in veterinary behavior support products.
- Soft chew format with a whitefish and brewers yeast base is generally tasty and easy to give to most cats.
- Free from corn and artificial flavors or dyes, which can be helpful for owners trying to avoid unnecessary additives.
- Includes natural preservatives like mixed tocopherols and rosemary extract to help maintain product freshness.
Considerations
- This is a supplement, not a complete and balanced diet, so it should only be given in addition to a regular cat food that meets nutritional requirements.
- Contains whitefish and brewers yeast, which could be an issue if your cat has a known fish allergy or is sensitive to yeast.
- Calming supplements can vary in how much they help from one cat to another; some cats with significant anxiety may still need a behavior plan or prescription options from your veterinarian.
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
Thiamine
Thiamine (vitamin B1) is a water‑soluble vitamin commonly added to dog and cat foods to support carbohydrate metabolism and normal nervous and cardiovascular function. Because animals store little thiamine and it can be degraded by heat or destroyed by thiaminase in some raw fish, consistent dietary supply is essential—deficiency causes anorexia, lethargy, neurological signs and, in severe cases, seizures, so commercial diets are carefully fortified to meet species requirements.
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
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.
04
Gum Arabic
Gum Arabic (acacia gum) is a natural soluble fiber commonly used in pet foods and treats as a stabilizer, emulsifier and binding agent and provides fermentable fiber that can act as a mild prebiotic—benefiting gut microbiota in dogs and, to a lesser extent, cats—while not contributing meaningful protein, vitamin, or mineral nutrition. It is generally safe at typical inclusion levels and can improve texture and stool consistency, but high amounts may cause gastrointestinal upset or loose stools and rare sensitivities or allergic reactions should be monitored.
05
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.
Product Details & Brand
Product Specs
Brand
Under the Weather Pet is a pet food and supplement brand offering freeze-dried bland diets, broth toppers, and wellness chews for dogs and cats. The brand targets health-conscious pet owners seeking convenient, vet-formulated solutions for digestive upset and recovery support.
Visit Under the Weather PetManufacturer
All Under the Weather products are manufactured in the United States in facilities that follow FDA and USDA guidelines. The company emphasizes quality control, sourcing premium human-grade ingredients, and producing small batches to ensure safety and nutritional integrity.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Under the Weather Pet Calming Soft Chews Supplement for Cats has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Under the Weather Pet ever been recalled?
We have no recalls on record for Under the Weather Pet. 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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