The 7 Best PetLab Co. of 2026

Why We Chose This Product:

PetLab Co. Probiotic Chew + earned top ranking by directly addressing the dual issues pet parents face most often: digestive instability and seasonal skin itching. Its 8-strain probiotic blend works alongside inulin prebiotics and pumpkin to regulate gut motility while combating the systemic yeast overgrowth behind frequent paw licking and head shaking.

Who Is It For:

Dog owners seeking an all-in-one daily soft chew to handle both chronic loose stools and yeast-driven skin itching. If your dog only needs short-term recovery after antibiotics, a clinical powder like FortiFlora is a more focused choice.

Why We Chose This Product:

Purina Pro Plan FortiFlora is the clinical standard for acute gastrointestinal flare-ups in dogs. Its microencapsulated Enterococcus faecium strain is specifically engineered to survive stomach acid and rapidly repopulate beneficial gut flora, making it far more effective for sudden loose stools than general multi-vitamin chews.

Who Is It For:

Pet parents dealing with sudden onset diarrhea, flare-ups from dietary indiscretion, or gut disruption caused by prescription medications. If you want a daily general maintenance chew at a lower price point, Bark&Spark Probiotics are a better fit.

Why We Chose This Product:

Vital Pet Life Salmon Oil provides raw, high-potency Omega-3 and Omega-6 fatty acids that directly target dermal inflammation and dry, itchy skin. Unlike broad-spectrum probiotic chews that support skin secondarily through gut balance, this pure liquid oil acts quickly to nourish the skin barrier and restore coat shine.

Who Is It For:

Dogs suffering from dry, flaking skin, seasonal allergies, or dull coats that benefit from pure essential fatty acids. Owners who prefer soft chews or dislike handling fish oils should look to chewable alternatives.

Why We Chose This Product:

Purina Pro Plan FortiFlora for Cats delivers targeted veterinary-grade GI support tailored specifically for feline digestive systems. Beyond resolving diarrhea and bowel irregularity, its intensely savory liver flavor acts as a reliable appetite stimulant for recovering or picky cats refusing their normal food.

Who Is It For:

Cats experiencing stress-induced diarrhea, inflammatory bowel issues, or decreased appetite due to illness. If your cat suffers from lower urinary tract issues rather than GI upset, Hydra Care is the more appropriate treatment.

Why We Chose This Product:

Pedigree Dentastix provides physical mechanical scraping that targets oral hygiene directly, an area untreated by powders or oils. The unique X-shape allows dog teeth to sink deep into the chew, scraping away soft plaque and tartar along the gumline before it mineralizes.

Who Is It For:

Medium-sized adult dogs needing a low-cost daily treat that helps reduce plaque accumulation and bad breath between vet cleanings. Owners looking for clinical digestive or joint relief should select a dedicated supplement chew instead.

Why We Chose This Product:

Purina Pro Plan Calming Care harnesses the gut-brain axis using a specific Bifidobacterium longum BL999 strain. Rather than sedating the pet, it modulates neural signals to maintain positive emotional states and stable cardiac activity during stressful triggers like fireworks, visitors, or routine changes.

Who Is It For:

Dogs with separation anxiety, noise phobias, or travel-induced distress that express nervousness through pacing or loose stools. If your dog suffers strictly from dietary diarrhea without behavioral stress, standard FortiFlora is recommended.

Why We Chose This Product:

Bark&Spark 180-Count Probiotic Chews offer a practical, budget-friendly bulk solution for long-term gut maintenance. By combining multi-strain probiotics with digestive enzymes, it tackles daily flatulence, mild constipation, and loose stools without the high recurring expense of veterinary sachets.

Who Is It For:

Multi-dog households or large breed owners wanting an economical, long-lasting daily chew for routine bowel regularity. For acute, severe diarrhea requiring immediate clinical intervention, veterinary powders remain superior.