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PetLab Co. Allergy & Immune Daily Probiotics for Dogs. Supports Yeast Production, Seasonal Allergies, Intermittent Itchiness, Gut & Digestive Health - 30 Chews for Small Dogs - Packaging May Vary Review

By Marcus Bell · Dog nutrition editor · Published 2026-06-07 · Updated 2026-06-26

4.1 (4,129) Amazon rating$37.955,000+ bought last month

Our verdict

PetLab Co.'s allergy and immune chew combines a multi-strain probiotic blend with krill oil, colostrum, and postbiotics aimed at seasonal itchiness and yeast balance, and its nearly 4,100 reviews give it a solid track record even with the rating running a bit lower than some rivals.

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Best for

Small dogs dealing with seasonal itchiness or yeast issues alongside general digestive support.

Skip if

You have a large or medium dog, since this formula and dose is sized for small breeds, or your dog has a milk allergy given the Allergen Information on the label.

  • Form Soft Chew
  • Flavor Pork
  • Best for Stomach
  • Weight 3.17 Ounces
  • Priced 52% above the category median ($24.99 across 128 tracked models)

Our scorecard

4.1/5 overall
  • Owner rating4.1/5

    4.1 average across 4,129 owner ratings

  • Popularity4.1/5

    4,129 owner reviews, more than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

This PetLab Co. chew goes beyond a basic probiotic. The ingredient list includes a proprietary blend of Bacillus coagulans, B. clausii, and B. subtilis alongside bovine colostrum, krill oil for omega 3, FOS and GOS prebiotics, borage oil, a yeast postbiotic blend, and vitamin E. It is positioned to support yeast balance, seasonal allergies, and general gut and digestive health together.

It is a pork flavored soft chew, 30 count, sized for small dogs, and the label flags milk as an allergen to watch for. At $37.95, it is priced toward the higher end for a 30 count bag, reflecting the longer, more complex ingredient list.

With 4,129 reviews and a 4.1 average, it has one of the larger review bases on this list, though the rating trails a little behind some of the higher rated, simpler probiotics here, which is worth factoring in given how many ingredients are combined into one chew.

Pros

  • Broad formula covering probiotics, postbiotics, colostrum, and omega 3 in one chew
  • Aimed specifically at yeast balance and seasonal itchiness, not just digestion
  • Large review base of over 4,100
  • High bought last month volume suggests strong repeat demand

Cons

  • 4.1 rating trails several other probiotics on this list
  • Contains milk as a listed allergen
  • Higher price for a 30 count bag
  • Formula is sized for small dogs only

Specifications

Form
Soft Chew
Flavor
Pork
Best for
Stomach
Weight
3.17 Ounces

Performance notes

The combination of three Bacillus probiotic strains, a yeast postbiotic blend, colostrum, and krill oil points to a formula built for skin and immune support alongside digestion, which lines up with its positioning for seasonal allergies and yeast balance rather than plain stomach upset.

What buyers say

At 4.1 stars across 4,129 reviews, sentiment is generally positive but more mixed than some of the higher rated chews on this list, which is common for multi ingredient formulas being asked to do more than one job.

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Frequently asked questions

What is this chew meant to help with besides digestion?

The ingredient list, which includes colostrum, krill oil, and a yeast postbiotic blend, is aimed at supporting yeast balance and seasonal itchiness in addition to general gut health. It is formulated to support these areas, not to treat a diagnosed skin or allergy condition.

Is this safe for a dog with a milk sensitivity?

The label lists milk under Allergen Information, so if your dog has a known milk sensitivity, talk to your vet before trying this chew.

Is this only for small dogs?

Yes, this particular listing is formulated and dosed for small dogs. Larger dogs would need a different product or dose from the brand.

our full rankings  ·  All Dog Probiotics & Digestive

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