Nulo is a U.S.-based pet-food brand that focuses on high animal-protein, low-carbohydrate dry and wet formulas for cats and dogs.

For cats, the main dry lines you’ll see are FreeStyle (high-protein, grain-free or grain-inclusive recipes), MedalSeries (high-protein, limited-ingredient formulas), Digestive Health (formulated for sensitive stomachs), plus targeted lines for indoor cats, kittens, and weight management. 

These lines are sold in multiple bag sizes and flavour combinations to match life stages or special needs.  

What are the ingredients in Nulo dry cat food? 

Nulo emphasises real deboned meat (chicken, turkey, cod, etc.) and meat meals near the top of ingredient lists, with limited starches or low-glycemic carbs. 

That matters because cats are obligate carnivores: higher-quality animal protein sources generally supply the essential amino acids they need, and lower carbohydrate content can help manage energy balance in less active indoor cats.

Does Nulo use probiotics, and are they effective after cooking? Yes, Nulo adds the patented BC30 (GanedenBC30) probiotic to many of its formulas.

According to Farmpally, the BC30 survives the cooking process in a dormant form and becomes active in the gut, which may support digestion and gut immunity. That is central to Nulo’s “probiotic advantage” messaging for Digestive Health recipes.

Probiotics can help some cats with sensitive GI tracts, but individual responses vary and probiotics aren’t a substitute for veterinary care for chronic conditions. 

Is Nulo grain-free and are there grain-inclusive options?

Nulo offers both grain-free and grain-inclusive options. Some FreeStyle and MedalSeries recipes are grain-free and marketed as low-carb, while other Nulo lines or specific limited-ingredient products include select grains or low-glycemic carbohydrates. 

How much protein and calories do Nulo dry foods typically contain?

Nulo positions many formulas as “high animal-based protein.” Calorie and crude-protein values vary by recipe. For example, MedalSeries limited-ingredient kibbles can be in the ~3,600–3,800 kcal/kg range (several hundred kcal per cup, depending on cup definition), and protein percentages appear higher than many grocery-brand kibbles. 

Has Nulo ever had recalls or safety problems?

As of the most recent public reporting, Nulo’s cat food lines have no active recalls and have been described in multiple sources as having a clean recall history.  

Are vets positive about Nulo? 

Akin Chaktty, an animal specialist at Farmpally recommended  Nulo for its higher animal-protein focus and for specific digestive-health formulas. Does Nulo make limited-ingredient formulas for food sensitivities? Yes, MedalSeries includes limited-ingredient kibbles formulated with single-source proteins and simplified ingredient lists intended for food-sensitive cats.  

Will feeding Nulo stop hairballs? 

Nulo offers hairball and digestive-support formulations that include prebiotic fibres and probiotics; these ingredients can help some cats pass hair more easily. However, hairball control depends on grooming, fibre type and amount, hydration, and individual cat biology, so hairball reduction is often incremental rather than guaranteed.  

How should I transition my cat to Nulo to avoid stomach upset? 

Switch gradually over one week by mixing increasing proportions of Nulo with the old food each day and watching stool consistency and appetite. If your cat has a very sensitive stomach, extend the transition and consult your vet if diarrhoea or vomiting occurs. 

Is Nulo appropriate for kittens and pregnancy/lactation? 

Nulo produces kitten-formulated recipes (e.g., Digestive Health Kitten) that meet AAFCO growth or all-life-stage statements for their specific recipes. Use life-stage-appropriate formulas for kittens and pregnant/nursing queens and confirm the AAFCO statement on the bag.  

Do cats generally like the taste of Nulo? 

Owner reviews and retailer feedback frequently rate Nulo as highly palatable; many cats accept Nulo quickly, especially recipes with high animal-protein content.  Is Nulo a good pick for indoor or less-active cats? Nulo offers indoor and healthy-weight formulas with adjusted calorie density and fibre content to help less-active cats maintain weight.  

Can Nulo help cats with chronic diarrhoea or sensitive tummies? 

Digestive Health recipes and MedalSeries limited-ingredient lines are formulated for digestive support and may help some cats with food-responsive GI issues, especially because of the BC30 probiotic and added prebiotics.  

Are there any complaints about Nulo? 

On discussion forums, some consumers raise concerns about specific inclusions like dried fruits or certain binders and occasional black speck reports in wet formulas (often explained as mineral reactions in processing). 

Overall, criticisms are less frequent than with lower-quality supermarket brands, but individual ingredient sensitivities do exist; read ingredient lists if your cat has allergies.