The short answer
A chew’s shape does not tell you its job.
An ordinary training treat rewards a behavior. A calming chew is marketed for a different purpose and may contain supplemental ingredients with their own use limits. Before trying one, review the exact product with your veterinarian. VCA notes that “natural” does not establish safety and that products alone rarely resolve behavior problems.[2]
Why this question is timely
Fi announced a recall of specified dog-supplement lots on September 3, 2026; FDA posted the announcement September 8. It includes Fi Calming supplement for Dogs, 180 g, lot 26118, and Fi 8-in-1 Formula supplement for Dogs, 180 g, lot 26159, because of possible Salmonella contamination. A September 18 correction updated the company name to Fi Barking Labs Corp.[1]
Checked October 4, 2026: If you own a listed product, read the current FDA-posted notice and follow its stop-use and disposal instructions. Our recall checklist helps you match a package and keep useful records.
The wider lesson is to separate two questions: Is this particular product appropriate and safe to use? and What evidence supports its promised benefit? A contamination recall does not answer the second question, prove every calming product unsafe, or make an ordinary treat an anxiety treatment.
Calming chew or training treat?
| Ordinary training treat | Calming supplement chew |
|---|---|
| Purpose: a food reward during practice. | Purpose: a product marketed for a behavioral effect. |
| Plan: appropriate reward portions within the feeding plan. | Plan: exact serving and frequency agreed with the veterinary team. |
| Question: does this food fit my dog’s diet and the task? | Question: is this formulation suitable for my dog, and how will we judge it? |
“Soft chew,” “treat” and an appealing flavor describe how an item is offered; they do not make the two jobs interchangeable. Do not give another supplement chew for every successful sit. Follow the product’s directions and veterinary advice rather than using willingness to eat as the serving rule.[5]
Mizusu liver treats are food rewards. We have not established a calming or anxiety-treatment benefit for them. For ordinary reward portions, see our liver-treat training guide.
Five checks before trying a calming chew
1. Name the problem before selecting an ingredient
Write what happens, where and when: for example, “paces after the doorbell” is more useful than “needs calming.” Cornell explains that anxious behavior can have different underlying patterns and that the plan depends on the cause. Seek veterinary advice rather than assuming an online remedy fits.[3]
2. Bring the whole label
Photograph the front, ingredient panel, serving directions and warnings. Record the exact variant, lot and best-by date. Check whether a listed amount is per chew or per multi-chew serving. If the unit or ingredient amount is unclear, ask the manufacturer; do not fill the gap with another brand’s numbers.
Ask your vet to review all medicines and supplements already being given. VCA’s L-theanine guidance, for example, identifies possible interactions and emphasizes disclosing the full list. That is a reason to check the specific formula, not an instruction to use that ingredient.[5]
3. Ask what was actually studied
VCA describes promising preliminary work for some nutraceuticals, while noting variation in quality and efficacy. That does not validate every blend containing a named ingredient.[2]
Ask: was the research in dogs, on this formulation, at the proposed serving, and for the problem we are addressing? Request the study link. A customer review, ingredient mechanism or study in another species leaves different questions unanswered. These are questions to evaluate with the veterinary team, not a scoring system that certifies a product.
4. Keep food accounting separate from serving limits
Record the chew’s calories, if available, alongside other extras. AAHA flags excessive calories from noncomplete foods as a nutritional risk.[4] Being within a calorie allowance does not authorize more supplement servings. Ask the company for missing calorie information and your vet how the product fits the diet.
A hypothetical distinction: “calories per chew” belongs in the food record; “chews per serving and servings per day” belongs in the product-use plan. Neither field can replace the other. This is a recordkeeping example, not a dose recommendation.
5. Agree on a review point
Before starting a vet-approved product, ask what change to look for, when to reassess, and which unwanted changes require a call. There is no single trial duration for all calming chews. Keep the broader behavior plan: Cornell emphasizes behavior modification and predictable routines, with treatment tailored to the dog.[3]
Copy this note for the veterinary appointment
One product, one clear question
- What I see: behavior, setting, frequency and when it began.
- What I am considering: exact product and variant; attach all label photos.
- What my dog already receives: meals, treats, supplements and medicines, including amounts and timing.
- What I need decided: whether this product fits; approved serving and frequency; what to avoid combining.
- How we will follow up: observations to record, unwanted effects to report, review date and whom to contact.
Hypothetical owner note: “The doorbell episodes began two weeks ago. I have three short descriptions of what happened and the complete label of the chew I found. Before buying it, can we check whether there is a health or behavior issue to address and whether this product has a role?” You do not need to provoke another episode to make the note useful.
If the immediate question is refusing food on walks, start with our treat-refusal guide. Buying a supplement is a separate decision from choosing a familiar reward.
When a shopping decision should wait
Repeated distress, escape attempts or aggression deserve a professional plan. Do not delay veterinary advice while cycling through chews or recreating a frightening situation to test them. Cornell recommends a veterinary visit for anxious behavior rather than selecting an over-the-counter remedy on your own.[3]
If your dog eats an excessive or unknown amount of a supplement, or you suspect a harmful ingestion, contact your veterinarian or an animal poison-control service promptly with the packaging available. FDA advises acting immediately for potentially dangerous ingestion; do not rely on an absence of visible symptoms as clearance.[6]
For questions after consuming a recalled product, follow the notice and contact your veterinarian about illness.[1] Keep suspected exposure, observed symptoms and a confirmed diagnosis separate in your notes.
Common questions
Can I use calming chews as repeated training rewards?
Do not treat a supplement chew like an unlimited snack. Its serving instructions and your veterinarian’s plan govern its use, even if your dog likes the taste. Use an appropriate ordinary food reward for repeated practice.
Does the Fi recall mean every calming supplement is unsafe?
No. The FDA-posted announcement identifies particular Fi products and lots. Read the current notice for its scope. A contamination recall does not establish whether other products are safe or effective.
What should I bring to the vet before trying a calming chew?
Bring the full label, serving directions, ingredients, your dog’s food and medicine list, and a short record of the behavior you want help with. Ask how benefit and adverse effects will be assessed and when to review the plan.
Sources
- Fi Recalls Supplements for Dogs Because of Possible Salmonella Contamination (announced September 3; FDA posted September 8, 2026) — U.S. Food and Drug Administration. Accessed October 4, 2026.
- Behavior Counseling: Complementary Treatments — VCA Animal Hospitals. Accessed October 4, 2026.
- Anxious Behavior: How to Help Your Dog Cope with Unsettling Situations — Cornell University College of Veterinary Medicine. Accessed October 4, 2026.
- Nutritional Risk Factors: 2021 Nutrition and Weight Management Guidelines — American Animal Hospital Association. Accessed October 4, 2026.
- L-Theanine — VCA Animal Hospitals. Accessed October 4, 2026.
- Potentially Dangerous Items for Your Pet — U.S. Food and Drug Administration. Accessed October 4, 2026.