PURINA PRO PLAN VETERINARY DIETS FortiFlora Powder Digestive Supplement for Cats, 30 count - Chewy.com

Purina Pro Plan Veterinary Diets FortiFlora Powder Digestive Supplement for Cats

By Purina Pro Plan Veterinary Diets
Rated 4.6276 out of 5 stars
Count: 30 count
Count: 30 count

$30.99Chewy Price
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About This Item


  • Great-tasting probiotic supplement powder for cats.
  • Crafted in collaboration with nutritionists, researchers and veterinarians.
  • Developed using a proprietary microencapsulation process for enhanced stability.
  • Contains live microorganisms to help support feline digestive health.
  • Specially formulated to promote normal intestinal microflora in cats suffering from diarrhea.

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Nutritional Information

Feeding Instructions


Play Video: Learn More About Purina Pro Plan Veterinary Diets From Our Team of Experts
Learn More About Purina Pro Plan Veterinary Diets From Our Team of Experts

About Purina Pro Plan Veterinary Supplements for Cats

Supplements You Can Trust

From gastrointestinal and immune health to anxious behaviors and hydration issues, find support for your pet with Purina Pro Plan Veterinary Supplements. Trusted by veterinarians, every supplement is backed by research, including Purina’s line of probiotic supplements that represents their leadership in the field of microbiome research.

Easy to Administer

Each supplement was designed to be effective and easy to give your pet via powder sachets or liquid pouches.

Made by Experts

Pro Plan Veterinary Supplements are developed by a collaborative network of scientists, veterinarians and nutritionists.

Exceptional Quality

In a typical shift, Purina conducts 400+ quality checks on ingredients, packaging, receiving, processing, and packing.

Responsible Sourcing

Each ingredient can be traced back to its trusted supplier, so quality may be evaluated all the way back to the source.

About Purina Pro Plan Veterinary Supplements

Purina Pro Plan is committed to the health of every pet— especially those pets with unique needs. These advanced veterinary supplements are backed by decades of research and supported by a global network of scientists. Purina’s knowledge and experience continues to lay the groundwork for innovative supplements trusted by pet parents and veterinary professionals alike.

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Questions & Answers

32 Customer Questions

Is it as effective, or near as effective, to break the packet in half and sprinkle it on food twice daily? My cat likes it so much, he would eat more if I spread it over two rather than one meal.
Answer by ChewyMay 10, 2018
One sachet contains 500 million live microorganisms, and it's important to give them the entire packet at once so that the highest possible number of good bacteria reach your pet's lower intestine intact. A higher population will provide more beneficial effects to their digestion and health.

How long does it take to work?My cat just started eating it today. Thanks!
Answer by ChewyJan 09, 2018
Just like any probiotic, FortiFlora for cats can take some time to start working. While minor improvements might be observed during the first few days, you’ll really start to see the full effects of FortiFlora after your cat has been on it for a week or two.

Can this be used as a bribe to get cats to eat raw food?
Answer by ChewyApr 23, 2018
This supplement is not meant to entice your cat to eat a certain food. It is intended to be a digestive aid, supplying the healthy microorganisms needed for good digestion.

Weill this product do anything to help with a furball issue?
Answer by ChewyMar 23, 2018
Probiotics and enzymes help maintain a healthy digestive system and helps to prevent any potential diseases of the digestive track. They will also help your cat pass any undigested food that tends to attach to hair sitting in the digestive track, thus helping him pass hair before it becomes a hairball.

ReviewsWrite a Review

Rated 4.6276 out of 5 stars
1783 Ratings
Would recommend to a friend

1782 Customer Reviews

Rated 5 out of 5 stars
By LT on May 25, 2023

Good for constipation

My 16 year old cat has early kidney disease and is on a prescription diet. Even with his wet food, which helps him get enough moisture to prevent dehydration, he still gets constipated and struggles at the litter box. He's been taking this supplement every day for the past two months and no longer appears to have that problem, keeping his little guts flowing regularly and with less pain. It has been such an improvement for my little old man.

Rated 4 out of 5 stars
By kholm537 on May 19, 2023

Used this for my 17+ cat

My cat has always had issues with constipation. She had been diagnosed with kidney disease and a UTI. We switched her diet and I was concerned about how that would be with her constipation issue plus she did not take the antibiotic well and had lots of diarrhea and vomiting. I used this per the vet to help her with that and I haven’t taken her off because I think she’s doing a lot better on them and her appetite has even come back so she’s back to eating the right amount of food and she still has constipation issues but it has gotten noticeably better.

Rated 5 out of 5 stars
By GailW on May 15, 2023

Felix demands it daily!

Felix is my fancy designer boy who won’t eat unless there is a dusting of Fortiflora on every meal. So one packet lasts for about 12 meals, taking him through 6 days. Like I said, just a dusting makes him happy (and cooperative..). Oscar, his brother from another mother, does not have the fancy gene and eats whatever is on the plate. But when he (rarely) gets sick, Fortiflora in the suggested dosage, takes care of it within a day. fancy and eats everything the moment it hits the plate.

Rated 5 out of 5 stars
By Lynn on May 27, 2023

Miracle for feline gut health!

My 14 year old senior cat had been throwing up for a while without any reason why. Blood and stool sample showed no illness. Finally the vet recommended this in her food daily. It has made all the difference! Besides hairballs, she doesn't throw up her food anymore. She's like a new cat with renewed energy. I couldn't be happier and I'll continue to use.

Rated 5 out of 5 stars
By 2cathousehold on May 1, 2023

Works Well for Bob

My cat was born Bob tailed. As a young cat he had soft bloody stools that got on him and much of what he sat on. Sensitive stomach kibble helped. Neither of my cats like soft foods. As a 3 year old still eating sensitive stomach the problem returned. Tests didn't reveal any parasites. I was unsuccessful at getting meds into his system each day, but the little bit I could get down him and 2 packets on the two cats joint kibble each day relieve stomach problems. It took a while but I'm so relieved not to be washing the entire households furniture covers daily.

Rated 4 out of 5 stars
By gracie on May 13, 2023

good but unsure if needed

I purchased a box of these when the Shelter where I adopted Buddy my 5 mo old kitten, gave me 1 packet of this. Apparently, they give it to their kittens. He has no problems so unsure if needed. His first vet visit is May 17th will ask about this. It is pricy for 30 packets as also giving him Pro Plan Purina Calming supplements. Think that is more needed. Waiting on vet visit to see if to order more.

Rated 5 out of 5 stars
By Maria on May 22, 2023

Absolute a must for my kitties

Great supplement for kitties with digestive problems. I use it daily with my cats and it has helped regulate their metabolism, constipation with one cat and diarrhea issues with the other cat. It can be used with healthy cats to maintain good digestion function as well per my vet on an every other day or so use.

Rated 5 out of 5 stars
By Beth on May 14, 2023

Yum! Yum!!

My cat LOVES this stuff. I can’t get a pill into her to save my life, but she can’t get enough of this powdered probiotic. She needs it frequently to balance her gut against the antibiotic shots she gets for UTIs at least once or twice a year. My dad’s cat was suffering from diarrhea and these packets cleared that right up too :))

Rated 5 out of 5 stars
By NorseMaiden on Apr 27, 2023


Initially I added this to my cats' dry food and they started shovel eating. Since I wanted them to actually get benefit from the probiotic and not just scarf and barf I consulted Google. It seems many folks just mix it with water to make a broth. It worked! Very well in fact. I went with about 1/2 cup water and one sachet. My boys drink it right up. One sachet every morning (approximately every 24 hours) has been working well.

Rated 2 out of 5 stars
By JorMama on Apr 29, 2023

Not for my cat's needs

I purchased this to see if I could help my cat's semi-constipation. She has always been an EOD girl. This product contributed nothing to help that condition. A 1/4 teaspoon Miralax works muck better for that purpose. I also made the mistake of sprinkling on her dry food. I think she aspirated some, not a pretty result. Stick with using wet food please.