Purina Pro Plan Veterinary Supplements Calming Care
- Calming Aid
- 1
- 30
- 1.1 ounces
- More reviewed than 73%
A probiotic calming supplement with the top rank in its Amazon category and strong repeat purchase volume, a reasonable option for owners wanting a daily add in rather than an as needed sedative.
As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.
How it ranks among the 63 calming aids we track
4.2★ across 3,100 Amazon ratings, Bayesian-smoothed toward the category average.
3,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
20,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 63 calming aids we track - how the scorecard works · full calming aids data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Purina Pro Plan's Calming Care is a veterinary line probiotic supplement for dogs, a powder built around the Bifidobacterium longum BL999 strain, sold as a 30 count carton of unflavored packets aimed at supporting calm behavior.
Unlike sedatives or herbal blends, this is a probiotic based approach; the active ingredient is a specific bacterial strain rather than a calming herb, a different mechanism than most over the counter calming chews. It ranks first in Dog Relaxants and 201st in Pet Supplies overall, with bought in month figures in the tens of thousands, indicating heavy repeat purchase as a maintenance supplement.
- 30 count carton
- Bifidobacterium longum BL999 probiotic
- Unflavored powder
- Number 1 in Dog Relaxants
Who it's for
Suited to owners managing ongoing anxiety in a dog, especially larger breeds per the listing's size note, who want a probiotic approach they can add to food daily. Not intended for acute, one off situational anxiety since it is a daily supplement, not a fast acting calming aid.
Strengths and trade-offs
Drawn from this product's published specifications.
- Probiotic based approach distinct from herbal or sedative calming products
- First ranked in Dog Relaxants on Amazon
- Allergen free, unflavored powder mixes into existing food
- Daily supplement, not suited for immediate or situational anxiety
- Listing specifies large breed sizing; smaller dogs may need to confirm dosing
Performance notes
The active ingredient is Bifidobacterium longum BL999, a probiotic strain studied for gut brain axis effects, delivered as an unflavored powder meant to be mixed into food daily rather than given as a treat, and Purina notes the formula is allergen free.
Specifications
| Brand | Purina |
|---|---|
| Model | 00038100196040 |
| Dimensions & fit | |
| Item Weight | 1.1 ounces |
| Dog Breed Size | Large |
| Included components | |
| Unit Count | 30 |
| Included Components | One (1) 30-Count Carton - Purina Pro Plan Veterinary Supplements Calming Care Canine Formula Dog Supplements |
| Warranty & support | |
| Warranty Description | 60 days |
| Other details | |
| Number Of Items | 1 |
| Best Sellers Rank | #201 in Pet Supplies (See Top 100 in Pet Supplies) #1 in Dog Relaxants |
| Product Benefits | Calming Support |
| Active Ingredients | Bifidobacterium longum BL999 |
| Model Number | 00038100196040 |
| Allergen Information | Allergen-Free |
| Upc | 038100195470 |
| Flavor | Unflavored |
| Item Type Name | Dog Supplement |
| Manufacturer Part Number | 00038100196040 |
| Asin | B0BGV8L7L2 |
| Item Form | Powder |
| Manufacturer | Nestlé Purina PetCare Company |
| Specific Uses For Product | Anxiety |
| Target Species | Dog |
How it compares
This product against the closest alternatives we track in calming aids.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Purina Pro Plan Veterinary Supplements Calming CareThis product | 4.2 / 5 | 3,100 | 4.3 / 5 |
| ThunderShirt for DogsThunderShirt | 4.2 / 5 | 55,700 | 4.3 / 5 |
| Rescue Remedy Pet DropperRescue | 4.2 / 5 | 19,500 | 4.3 / 5 |
| Advanced Calming Chews for DogsAdvanced | 4.4 / 5 | 2,500 | 4.4 / 5 |
| Zesty Paws Calming Chews for Dogs Composure & Relaxation for Everyday Stress & Separation…Zesty | 4.1 / 5 | 26,600 | 4.3 / 5 |
Similar calming aids from other brands
Questions about the Purina 00038100196040
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the active ingredient in Calming Care?
Bifidobacterium longum BL999, a probiotic strain, delivered as an unflavored powder.
How is it given to dogs?
It is a powder meant to be mixed into the dog's regular food, not a chew or treat.
Is this fast acting for a single stressful event?
It is formulated as a daily supplement, so it is built for ongoing support rather than immediate situational calming.