The 10 Best Cat Probiotics

Are you a pet parent concerned about the health of your cat?

Do you want them to live into old age comfortably?

Is this why you are searching cautiously for the right probiotic that gives your cat the extra boost it needs for a long and healthy life? If the answer to all these questions is yes, rest assured because you’ve found the blog with all your answers.

There are two types of bacteria, simply put, there is one which makes you sick and the other bacteria that makes you healthier. Probiotics are live bacteria and yeasts that is one of the good bacteria; it helps your digestive system. As a result of which, your cat can live a long and healthy life.

Now, as you read ahead, you’ll find a list of the ten best cat probiotics. We weigh the pros and cons to identify the best of the best.

By the end of this article, you will know everything that you need to know about probiotics. Let’s get started!

The Best Cat Probiotics

1. Purina Pro Plan FortiFlora Cat Probiotic Supplement


 Key Facts
  • Product Size: 4 x 3 x 5 inches
  • Weight: 30 gram
  • Product Form: Powder
  • Number of Packets: 30 packets

The Purina Pro Plan Veterinary Diets FortiFlora Probiotic Supplement are the safest and most effective probiotic for cats. It is considered as the #1 brand veterinarians prescribe. Created with a unique microencapsulation process, the FortiFlora probiotic is said to improve a cat’s intestinal microflora. Pet parents are advised to use one packet a day under the supervision of a veterinarian. The minimum number of live microorganism strands per serving are 1×108. They are also available for dogs. Moreover, it is suitable for a low carb diet so that it suits cats with sensitive systems.

 Things I really like
  • The digestive nutrients are helpful for cats even in the event that the probiotics don’t work. This could help underweight cats gain an adequate amount of weight.
  • The shelf life of the product is up to a year, so you can stock up without the fear of the product being expired.
  • Additionally, some people have managed to use one packet for an entire week.
  • As it is made for cats of all ages, you can feed it to a kitten or an old cat with diarrhea.
  • It is easy to mix the powder with the food simply.
  • Moreover, it can actually act as a nutritious taste enhancer.
 Things I don’t like
  • There are some counterfeit versions of the product that could be harmful to the cat, even deadly.
  • Customers have received the supplements beyond their expiration date.
  • Compared to other probiotics, Purina’s FortiFlora is a bit expensive.
  • In some cases, the probiotic remains ineffective in curing the cat of diarrhea.
  • Just so you know, the supplements are created with animal digest, which means they might’ve been made using euthanized animals.
  • Interestingly, cats with restrictive diet (such as; peas and venison) that doesn’t include flavor-enhancing food like beef do not like to eat these supplements.
  • It has a single strand of bacteria while other probiotics contain multiple strands of bacteria.

Pet Probiotics – Pet Digestive & Immune System Support


2. Pet Ultimates Probiotics for Cats – Stops Diarrhea & Vomiting, Cuts Litterbox Smell


 Key Facts
  • Product Size: 3 x 2.5 x 3 inches
  • Weight: 44 grams
  • Product Form: Powder
  • Number of Servings: 120 servings

PetUltimate’s probiotic for cats is created to improve their digestive system, skin, renewed vitality, and much more. Each scoop contains a hundred million bacteria beneficial for your cat. The probiotic is meant to help cats fight diarrhea, inflammation, etc. Furthermore, PetUltimate’s new probiotic decreases smell in the litter box, reduces shedding, and creates firmer stools. The ultra-concentrated probiotic is certified by the GMP lab located in the USA. Users are instructed to daily add a 1/8th teaspoon scoop of the product to the food. They guarantee results within 90 days; if it doesn’t work for your cat, you can call them back and get the money.

 Things I really like
  • There is a money-back guarantee, which means you are secured in the event the product doesn’t work for your cat.
  • Unlike some probiotics that are made for a specific breed, PetUltimate’s probiotic is made for 20 different breeds of cats.
  • Since the probiotic is made locally, in the USA, it is a bit more reliable than others.
  • If the probiotic works for your cat, it can be a bit addictive, the unhealthy drug-abusing kind.
  • PetUltimate has excellent noteworthy customer service.
  • There are about 20 different strains of good bacteria and a large number of strands as well.
  • Relatively affordable compared to other probiotics in the market.
  • For cats that find the probiotic’s taste odd, you can try out their dog version, which is a bit sweeter.
 Things I don’t like
  • When mixed with wet food, your cat may start vomiting.
  • Some cats are irritated by the smell of the probiotic and run away from food. This also includes cats that like food.
  • Contrary to the description of the product, it doesn’t reduce the smell (might make it worse!), nor does it reduce shedding.
  • Aside from the smell, the taste isn’t all that great either.
  • They may have advertised falsely, as it only has about 90 servings.
  • Majority of customers feel that it didn’t have any effect on preventing diarrhea.

3. VetriScience Probiotic Everyday for Cats


 Key Facts
  • Product Size: 8 x 3 x 5 inches
  • Weight: 72 grams
  • Product Form: Bite-Sized Treats
  • Number of Chews: 60 bite chews

VetriScience probiotic does not only provide probiotics but prebiotics as well. They are used to prevent digestive issues that arise from stress. It also helps cats that are dealing with food-related issues. VetriScience’s probiotic every day brings a ginormous 100 million CFU. You can find them in duck flavor. Each serving contains five calories and GanadenBC30 probiotics with each chew that are meant to improve immune support. GanadenBC30 is a strain that is helpful in protecting the immune system; it is commonly found in foods, drinks, and supplements. VetriScience also offers products in bite-sized and powder forms that support dental health, calm behavior, joints, and much more.

NOTE: CFU is an abbreviation of the colony-forming unit; in other words, the live microorganisms.

 Things I really like
  • The bite-sized treats can be easily broken down; it is very convenient for the cats to eat.
  • If you’re not a fan of bite-sized treats, you can always break it down into crumbs and mix it with food for the cat.
  • It can improve the cat’s bad breath significantly.
  • You can easily feed it to your cat if it likes the flavor of a duck
  • The bite-sized version may trick the cats into thinking that it is a treat, making it easier for you to feed them.
  • As they come in bite-sized treats, you don’t have to deal with the hassle of mixing packets of powered with food, or with the hassle of mixing pills with water.
 Things I don’t like
  • The probiotics will quickly dry up after you open the bag.
  • After it dries up, it can be too hard for older cats to chew easily.
  • Majority of cats don’t eat the supplements. For some unfathomable reason, the feline creatures won’t even dare to smell them.
  • Though it might help with the cat’s bad breath, it certainly doesn’t help the litter smell.
  • Since they are grainy, it can be difficult to digest for some cats.
  • For probiotic supplements, there is no flavor available aside from duck. If your cat doesn’t like the taste of a duck, you should probably skip to the next product.

4. Nusentia Probiotics for Cats


 Key Facts
  • Product Size: N/A
  • Weight: 44g
  • Product Form: Powder
  • Number of Scoops: 120 scoops

The Nusentia probiotic is made for both cats and dogs. It is recommended by veterinarians and approved for quality within the USA. Each scoop contains a billion good bacteria. Ideally, you should give one scoop of the Nusentia probiotic every day. Additionally, you can use this to recover from antibiotic digestive imbalance. Moreover, Nusentia guides potential customers and existing customers to use a six-week long regimen for their cat or dogs proper probiotic treatment. The probiotic miracle is approved by the FDA and made without the use of gluten, grains, rice, or any other byproducts.

 Things I really like
  • Probiotic Miracle doesn’t contain any animal byproducts, so pet parents can now rest assured.
  • As the probiotics are tasteless, my picky cat doesn’t realize what’s mixed into his food.
  • The product is great at helping cure cats of their digestive problems. In the aftermath, their litter doesn’t stink that much either.
  • This is considered more feasible in terms of costs compared to packets.
  • The probiotic miracle is supposedly good for elder cats and the cats with sensitive stomach because it doesn’t include any extra ingredients (grain, gluten, rice, etc.) that can harm the cat.
  • You won’t have to worry about any adverse effects because Nusentia is made in an FDA facility.
  • Additionally, it can be a great benefit for people that own cats and dogs.
  • Bonus pro – there is a small scoop inside.
 Things I don’t like
  • The quantity of the product is not enough, but we can always get a bigger size.
  • For my other cat that doesn’t like the food at all, it is difficult to convince it to eat the probiotic as it doesn’t have any flavor.
  • It is not the right product to help your underweight cats gain an appropriate amount of weight.
  • Though the probiotic is helpful in reducing loose stools, it is difficult to say the problem is completely resolved. The stool is often moist, and it sticks to everything.

5. VetOne Advita Powder Probiotic Nutritional Supplement for Cats


 Key Facts
  • Product Size: 3.2 x 2.9 x 2.1 inches
  • Weight: 30g
  • Product Form: Powder
  • Number of Packets: 30 packets

VetOne brings the powder probiotic called Advita. It is specially made to provide cats with natural supplements. VetOne state that they used prebiotic inulin and multi-string probiotics to improve the digestive system and immune system of a cat. Additionally, Advita includes four various live and active cultures. They come in the form of a capsule that provides better stability. VetOne suggest potential and existing customers use the probiotic daily for proper maintenance of appetite and digestion. They note it is better to use the probiotics to maintain your cat’s normal stool before a surgery consistently, antibiotic therapy, de-worming or more.

 Things I really like
  • My cats loved how the probiotics tastes; I didn’t have to force them to eat. In terms of taste, it is as good as Purina.
  • The powder is odorless, so cats won’t run away in the other direction when we mix it with the food.
  • It is a more economical choice for the number of benefits it brings to the table.
  • Advita can serve as a good alternative to Purina; your cat won’t be able to resist its taste.
  • You can use this to help a cat start eating wet food.
  • Advita has supposedly improved the fur and skin of the cats.
  • The product also contains turina, which improves the cat’s digestive system.
  • In the aftermath of a visit to the litter box, you will barely sense any stink.
 Things I don’t like
  • It is not recommended for cats with diabetes as Advita contains maltodextrin, a carbohydrate that increases blood sugar levels.
  • As the product has light consistency, it can fly around once you open the packet.
  • The effectiveness depends on lots. An older batch within its expiry date will not work as good as a newer batch of the product.
  • It doesn’t solve all intestinal problems; the allergies of a cat will continue.
  • I would not recommend it for cats with a sensitive digestive system.

6. Nexabiotic Probiotic for Cats & Dogs with Diarrhea Treatment & Constipation Support


 Key Facts
  • Product Size: 3.9 X 2.0 X 2.0
  • Weight: 22 grams
  • Product Form: capsules
  • Number of Servings: 30 powder doses

Probiotics are typically used by humans to maintain our health. For similar reasons, it is recommended that you use probiotics. Nexabiotic brings a probiotic for your cat that can be used to help your cat’s intestinal health and resolve any diarrhea problems. Nexabiotic is made for cats of all ages. It includes about 23 different probiotic strains, namely; Saccharomyces boulardii, Lactobacillus acidophilus, L. Brevis, B. animalis lactis (formerly named B. infantis), L. rhamnosus LB3, and S. thermophilus. Nexabiotic has claims that these are proven to maintain regular bowel movements and feline health issues. They recommend using the probiotic daily to resolve any diarrhea problems your cat dealing with. You also have the option to open the capsule, mix it with the food, and let your cat feast. Moreover, it is noted that the nexabiotic probiotic was made with human-grade ingredients.

 Things I really like
  • It is helpful in changing a cat’s diet from dry to wet food.
  • The capsules are flavorless, so it is easy to slip them into their food.
  • A specific yeast strain in this probiotic helps in sustaining the cat’s immune system.
  • Can be helpful in regulating the digestive system of a rescue cat from an animal shelter.
  • It can also help cats that are too stressed about moving away from home or cats that are stressed about traveling.
  • It is also beneficial in fighting intestinal parasites.
 Things I don’t like
  • There is a slight chance that your cat might develop a yeast infection if it is already taking medications.
  • Sometimes, the probiotics don’t work on preventing diarrhea if the cat has a sensitive immune system.
  • In certain instances, the probiotic tends to make IBD worse in cats.
  • As this isn’t flavored, it isn’t easy to get my cat to eat.
  • The size of the capsule is a bit larger in size for a cat.

7. Jump Probiotics for Dogs and Cats with Digestive Enzymes


 Key Facts
  • Product Size: 1.8 x 1.8 x 4 inches
  • Weight: 85 grams
  • Product Form: powder
  • Number of Servings: 30 servings

Jump’s 4+1 Probiotics are made for both cats and dogs. For your cats, it brings a pack of 5 billion good bacteria per serving. It is a 100% natural probiotic formula used to improve the digestive levels of the cat. This can help cats that are dealing with diarrhea problems, irritable bowels, soft stools, etc. Furthermore, Jump Probiotics contains lemongrass that carries antioxidants that improve a cat’s cognitive and cardiovascular functions. This probiotic is made locally, in the USA, with GMP certification and an FDA inspected the facility. Jump guarantees a full refund if you aren’t satisfied with the result.

 Things I really like
  • The probiotic is a good way to help in maintaining the fur and guts of a cat.
  • The tasteless feature makes it easy to slip it into the cat’s food. A great way to make picky cats get their daily dose of probiotics.
  • As the probiotic is odorless, it is a blessing for humans and cats. They won’t try to smell it and scurry away.
  • The probiotic comes in a large size, which is always a welcomed benefit. It can last for a longer period of time.
  • The probiotics also include fatty acids that bring additional health benefits such as cardiovascular and cognitive health.
  • Moreover, it can help those pet owners that have a cat and dog.
  • Jump’s probiotic also improves their coat, making it thick and sleek. If you have a rescue cat, this could be the right probiotic for you.
 Things I don’t like
  • May not attract cats that like to have some flavor in their food. Or, for cats that need flavor in their daily dose of medication.
  • The price of this outrageously expensive for a product that doesn’t even rank higher.
  • It is not recommended for cats that are under 12 weeks old.
  • You have to keep it refrigerated for the majority of the time.

8. Nutri-Vet Probiotics with Wild Alaskan Salmon Oil for Cats


 Key Facts
  • Product Size: 1.5 x 1.5 x 6 inches
  • Amount: 118 milliliters
  • Product Form: liquid
  • Amount of liquid: 4 ounces

The eccentric probiotic from Nutri-Vet Probiotics is a Wild Alaskan Salmon Oil for cats that are facing problems like diarrhea, irritable bowels, and any other digestive issue. These include a blend of ingredients that includes an omega-3 fatty acid, which is helpful in maintaining a healthy immune system. Additionally, it contains microorganisms that are used to maintain a healthy balance in the intestinal flora. Unlike other probiotics, this comes in the form of a liquid. To use it, you will have to pour a few drops into the cat’s food. Nutri-vet doesn’t mention there are any age restrictions. The Alaskan salmon oil can be sued by a cat of any size and age.

 Things I really like
  • This fish oil carries all the benefits of the probiotics. It can help improve the cat’s bowel movements.
  • Some cats that don’t mind the taste will clean it off the plate. When they do eat it, you will see drastic improvements in their coat.
  • Unlike other probiotics, this comes in a liquid form that can last for a longer period of time.
  • Additionally, it is easy to mix with wet food.
  • It can be used for cats of all ages.
  • The probiotic also contains antioxidants that are beneficial for the immune system.
 Things I don’t like
  • It has a horrible smell that chases the cats away.
  • There is something up with the probiotic because mixing it in the food doesn’t help lure the cats. It would rather starve than eat food.
  • This is not recommended for cats with a sensitive system.
  • The taste of this probiotic isn’t all that great either; the cat won’t eat it even if it’s mixed with dry food.
  • Nutri-Vet’s probiotic leaks from the bottom, the product design needs some improvements.
  • There might be some problems with the shipping as the product has arrived rancid on a few occasions.

9. NaturVet 50 Count Digestive Enzymes Plus Probiotics 2-in-1 Soft Chew


 Key Facts
  • Product Size: 2 x 4.5 x 7 inches
  • Weight: 90 grams
  • Product Form: Capsules
  • Number of Servings: 50 capsules

The Natur-vet digestive enzymes are rich in mineral, vitamins, and other nutrients that are helpful in maintaining the healthy digestive and immune system. Natur-vet state that one serving provides your cat with 500 million CFUs. Additionally, it is created with a soft chew formula that helps cats easily eat it along with their food. The probiotic is made for cats that older than the age of 12 weeks. It is primarily made with enzymes that can break down food and optimize nutrients. Furthermore, the Natur-vet probiotic is made with natural ingredients.

 Things I really like
  • It can help improve the cat’s coat significantly and make it appear soft and plump.
  • The probiotics work well in solidifying the stools; it is a great addition.
  • Keeping the horrific smell aside, the cats actually like to eat the probiotic. Surprisingly, they have great taste.
  • The cats preferred them crumbled, so we are lucky that it is easy to break them down.
  • It works well with older cats, who seem to eat it easily because of its soft texture.
  • Though Natur-Vet is above the average price of a probiotic, it is worth the money.
 Things I don’t like
  • You may have to break up the treats in order to make them more digestible for the cat.
  • It is a tad more costly than other probiotics.
  • They have a bad smell, which makes it worse for pet owners of picky cats.
  • Cats with sensitive stomachs aren’t going to be able to digest these either.
  • A great portion of the soft chews turn into dust and go into waste if your cat doesn’t like the dust on her food.
  • The product might be a bit too chewy for the cat.

10. Thomas Labs Acidophilus Forte Digestive Powder


 Key Facts
  • Product Size: 2 x 2 x 4 inches
  • Weight: 16 ounces / 454 grams
  • Product Form: powder
  • Number of Servings: 96 servings

Thomas Labs brings Acidophilus Forte a product that provides probiotic supplements to improve the digestive system of cats, dogs, and birds. Additionally, the probiotic carries a lactobacillus acidophilus, which is used to improve intestinal health and support the immune system and other liver functions for cats that may be dealing with bowel movement problems. Acidophilus forte contains living microorganisms so that they can improve the health of digestion and absorption. There are 300 million CFU in the Thomas Lab probiotic. While giving it to cats or dogs, you are instructed to provide one teaspoon daily. For birds, you should give ¼ and ½ scoop per gallon.

 Things I really like
  • As it doesn’t have any taste, picky cats won’t know something is mixed in their food. In simple words, it’s easier to slip the probiotics into their food.
  • The Acidophilus Forte is the perfect probiotic for your cat if it needs a soft and shiny coat.
  • If you own a bird, cat, and dog, the probiotic should be your first pick. It can help any of the three with their digestive issues.
  • There is enough quantity to last a long period of time.
  • Considering the range of benefits, it is really cost-effective.
 Things I don’t like
  • For cats that would only eat probiotics that taste good, this won’t help you.
  • This is not recommended for cats with a sensitive system.
  • I won’t recommend using it for cats as it has does not have an effect on their digestive system.
  • My cats refuse to eat it because of the horrific taste.
  • Moreover, it is not an ideal product for elder cats as they have a
  • The probiotic doesn’t have any effect on the coat of a cat.

Does My Cat Really Need Probiotics?

Probiotics contain good bacteria that can improve the cat’s digestive system and improve their health in general. Typically, probiotic is helpful in tackling diseases like the gastrointestinal tract, loose stools, vomiting, diarrhea, or inflammatory bowel disease (IBD). Aside from these medical conditions, probiotics can help the cat in stressful situations because it works on maintaining the immune system of a cat. Furthermore, it is helpful to use probiotics when a cat is given antibiotics. The antibiotics also decrease the good bacteria, due to which, giving probiotics can help maintain a balance of good bacteria. As it maintains the gut system, the probiotics can help a cat switch from dry food to wet food. Probiotics can also be good for skin allergies if it contains fatty acids.

Can I Give Them Human Probiotics?

Some people often ask me if it is okay to give their cat a human probiotic, the quick answer is a big no. There is just no scientific evidence to support the claim that human probiotics help the cat. The human probiotics contain doses that are made for humans. In contrast, your cat won’t require that large amount of dosage which is meant for humans. Additionally, the good bacteria humans require, Bifidobacteria is not the same good bacteria your cat needs, Lactobacillus. While you’re here, I might as well tell you that it is not okay to give your cat a dog probiotic. The exception being probiotics which are made for both, cats and dogs.

Are There Any Side-effects To Probiotics?

It is only natural for a pet parent to wonder if a new medication will affect their cat. Rest assured, probiotics rarely have any side-effects. This doesn’t mean there are not any probiotics that could harm your cat.

Hence it is necessary to check the following things when getting probiotics for your cat;

  • NASC quality seal
  • Advice from the vet
  • Purchasing from reputed companies like Purina

The extent of side effects is diarrhea and vomiting. This would occur in instances where the cat can’t handle the good bacteria or other ingredients in the probiotic you are using.

Things To Consider When Purchasing A Probiotic Supplement

In the previous section, I talked about how side effects are a result of a poor quality probiotic. So, this portion of the article is dedicated to helping you identify the right probiotic of good quality. Without any further delay, let’s dive right into it; you need to consider the strains, ingredients, and expiry date (duh!).


First off, you will need to find the probiotic where your cat can get live microorganisms. Why? A live strain of microorganism will help your cat maintain its digestive tract.

Then, you have strains of pure or artificially modified bacteria and yeast. I would urge you to find the ones that offer pure bacteria and strain, that do not contain any artificial additives because they could be dangerous for the cat’s health in the long term.

Artificial Ingredients

Speaking of additives, there are probiotics with artificial ingredients that could affect cats with the sensitive digestive system. So, you should look for probiotics made with natural ingredients. There are ingredients with artificial flavorings, colors, and some preservatives which could have an adverse effect on your cat’s immune system or digestive system.

Expiry Date

There are two kinds of people, those that check the expiry date before purchasing a product, and there are people who check the expiry date when things get worse. Don’t be the second kind, you should know better than to purchase a product beyond its expiry date. There are some instances where you might receive a probiotic beyond the expiry date, for which I would recommend seeking out the manufacturer for a refund or a replacement.

Bonus: Wet Food

Additionally, I would recommend finding the probiotic that can be easily mixed with wet food. This will make it easier for the cat to eat up the probiotic with the food. Compared to dry food, it is hard to notice anything added to wet food.

Know Your Probiotics

There are three types of probiotics that your cat should be given;

  1. Bifidobacterium
  2. Enterococcus
  3. Lactobacillus

Bifidobacterium is a strain of probiotics that provides the cat’s small intestines the necessary good bacteria. If your cat has digestive problems, look for probiotics that with the Bifidobacterium. The second probiotic is a strain that provides large intestine bacteria to the cat. It is helpful in normalizing the stool of a cat. Lastly, Lactobacillus is found in the most dietary supplements and dairy products. It helps improve the health of a cat’s digestive and urinary systems.

The Probiotics Isn’t Working On My Cat

Probiotics take time to work on your cat, don’t worry it has been a day or two, and there is no effect on your cat. The probiotics will take a couple of weeks when it has an effect. At that point, when you don’t see any changes, you can presume it is not effective for the cat.

In case your cat is just not eating the probiotic initially, I would advise steadily introducing it in the cat’s diet. You can do this by starting off by mixing about half a dose of probiotics. Over time, you can steadily increase the dosage when the cat gets accustomed.

Related Questions

What are the symptoms of pancreatitis in a cat?

Pancreatitis is a medical condition where the pancreas is inflamed. This condition can also be found amongst cats. Listed below are some symptoms that can help you identify whether your cat is suffering from pancreatitis.

  • Dehydration
  • Lethargy
  • Vomiting
  • Low appetite
  • Diarrhea
  • Weight loss
  • Fever
  • Abdominal pain

Is FortiFlora good for cats?

A cat is prone to billions of bacteria, possibly more, these could be good or bad. Purina’s pro plan introduced a probiotic supplement for cats ranging from kitten-hood to adulthood. The probiotic supplement is called veterinary diet feline fortiflora. It is considered to be one of the best probiotics available to cats.

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