Koi CBD Dog Biscuits (Immune Support)
Koi CBD Dog Biscuits (Immune Support)
Koi Immune Support CBD Dog Biscuits carry full-spectrum hemp extract alongside blueberries, flaxseed and sweet potato, with hemp seed added for its omega-6 to omega-3 ratio and its fiber. It is the antioxidant-leaning member of Koi's biscuit range, aimed at general resilience rather than a specific complaint.
Of the three functional ingredients, flaxseed and hemp seed are the ones doing measurable work — both are real fatty acid sources. Blueberry and sweet potato are good ingredients that get oversold; the antioxidant content of a few grams of dried blueberry in a biscuit is modest.
Quick Verdict: Who Is This For
Buy this if you want the daily-treat version of Koi's pet CBD and your dog has no particular problem to solve. It is the sensible default of the biscuit line: clean ingredients, decent fiber, nothing that will upset a normal dog.
Skip it if you are trying to fix something. "Immune support" is the vaguest claim in the pet supplement vocabulary, and there is no dog for whom this biscuit is the correct treatment for an actual illness. For mobility, the Hip and Joint chews. For anxiety, the Calming line.
Product Details
| Format | Baked biscuit |
| CBD | Koi full-spectrum hemp extract |
| Functional additions | Blueberry, flaxseed, sweet potato, hemp seed |
| Fatty acids | Omega-6 and omega-3 from hemp seed and flax |
| Fiber | From hemp seed and sweet potato |
| Sizes | $29.99, $59.98 and $119.96 pack sizes |
| Availability | One of three sizes in stock at the time of writing |
| Best for | Everyday treat with a functional ingredient list |
What This Does Well
Genuinely good fiber
Hemp seed and sweet potato give this biscuit real dietary fiber, which is more useful day to day than most of what gets marketed at dog owners. Firmer stools are an unglamorous but noticeable result.
Flax and hemp seed are honest omegas
Both are plant sources of alpha-linolenic acid. Dogs convert it less efficiently than they use marine omega-3, but it is a real ingredient doing a real thing, unlike a dusting of superfruit powder.
Treat-shaped, so it gets used
The same argument as the Joint Support biscuit: the supplement your dog wants is the supplement your dog gets. Compliance beats formulation for a healthy animal.
Pros and Cons
Pros
- Clean ingredient list with real fiber and fatty acid sources
- Gluten, dairy and GMO free
- Palatable enough to use as an everyday reward
- Batch COAs published by lot number
- Sweet potato and blueberry suit dogs with poultry sensitivities
Cons
- "Immune support" is a marketing claim, not a clinical one
- Antioxidant content from dried fruit in a biscuit is small
- Hard baked texture is wrong for dogs with dental problems
- Two of three pack sizes were out of stock at the time of writing
- Plant omegas are less efficiently used by dogs than marine omegas
What "immune support" actually means on a dog treat
There is no supplement, CBD included, that has been shown to make a healthy dog's immune system work better. What good ingredients can do is supply nutrients an animal might otherwise be short of, support gut health through fiber, and avoid the additives that cause problems. This biscuit does all three, and that is a fair thing to buy it for. What it will not do is prevent illness, shorten a bout of kennel cough, or substitute for vaccination. If your dog is genuinely getting sick often, that is a diagnostic question for a vet, not a treat aisle question.
On drug testing
Not applicable to pets. These biscuits have no bearing on a human drug test and are not intended for people.
Where to Buy
Sold direct from Koi. The biscuit line runs out of stock in specific pack sizes fairly often, so check availability on the size you want. If you have more than one dog, the largest pack is the only one that makes sense on price.
Koi’s published refund policy gives a full refund on returns started within 90 days of purchase, and 50% back between 91 and 150 days. Shipping is free on orders over $69, and current discount codes are on our Koi coupon page.
FAQ
Does this actually boost my dog's immune system?
No supplement has been shown to do that in a healthy dog. What it does is provide good fiber, plant omegas and antioxidants in a treat with a clean label.
How many can my dog have?
Follow the weight-based guidance on the box, and count them as part of the day's calories rather than extra.
Which biscuit should I pick?
Immune Support for a general everyday treat, Joint Support if you want the turmeric, Calming for stressful events. All three carry the same Koi full-spectrum extract.
Are they safe with my dog's food?
Yes for a normal diet. If your dog is on a prescription or elimination diet, check the ingredient list against what the vet has restricted.
Do they contain THC?
A trace, within the legal hemp limit, because the extract is full spectrum. Koi's pet spray is broad spectrum and contains none.
MyCannabisReviews may earn a commission from qualifying purchases made through links on this page, at no extra cost to you. We do not sell these products directly. Content is for adults 21+ and is informational only; it is not medical advice. Prices and specifications verified 28 August 2026 and change frequently.