Overview
FortiFlora is the dog probiotic many owners first hear about at the vet clinic. Purina calls it the number one veterinarian-recommended dog probiotic brand, citing a 2023 veterinary tracker survey. It comes as a powder in individual sachets that you sprinkle over your dog’s regular food, and Purina says it is suitable for puppies and adult dogs.
The formula is built around one probiotic strain, Enterococcus lactis SF68 (previously named Enterococcus faecium SF68), with a guaranteed count printed on the label. It is meant for everyday digestive support. If your dog has ongoing diarrhea, vomiting or appetite loss, see your vet first.
Key features
- Strain: Enterococcus lactis SF68 (formerly E. faecium SF68)
- Guaranteed 1 x 10^8 CFU per sachet
- Microencapsulated powder in 1 g sachets
- Box of 30 sachets
- For puppies and adult dogs; sprinkle on food
- Made by Nestlé Purina PetCare, a NASC Primary Supplier that passed the facility audit
Who it suits (and who should skip it)
It suits owners who want a simple, vet-familiar probiotic with a clear label, and dogs who are fussy about pills, since most take the powder on their food without noticing. It is also handy to keep in the cupboard if your vet recommends it during a diet change. Our guide to a dog throwing up yellow bile in the morning explains when a stomach upset is likely minor and when it needs a vet.
Skip it if you specifically want a multi-strain probiotic, since FortiFlora relies on one strain. We also could not find a Health Canada NN number for FortiFlora on Purina’s Canadian page or Canadian retailer listings, so we do not claim one.
One practical advantage is that the sachets travel well. Each one is sealed, so you can pack a few for boarding, a road trip or a dog sitter without measuring powder or explaining scoops. Store the box as the label directs and check the expiry date before you start a new one.
Costs to know about
FortiFlora is a consumable that comes 30 sachets to a box. Pre-measured sachets are convenient but usually cost more per serving than bulk powders. How often to use it is a question for your vet; follow the label.
Watch for packaging changes. Purina is introducing FortiFlora PRO Synbiotic Action, which adds a psyllium prebiotic and uses larger 2 g sachets, so the original box may be phased out on some listings. Check the name on the box you order.
How it compares
Nordic Naturals Omega-3 Pet comes from another NASC-audited company but targets skin and coat rather than digestion. Food matters as much as supplements for touchy stomachs, and Purina Pro Plan Sensitive Skin & Stomach Salmon & Rice is our sensitive-digestion dog food pick.
Pros and cons
What we like
- Single, well-studied strain with a guaranteed count
- Powder most dogs take on food without fuss
- From a NASC-audited manufacturer
- Suitable for puppies and adults
Watch out for
- Only one probiotic strain
- Sachets cost more per serving than bulk powders
- Separate listings on Amazon.ca and Amazon.com
Our rating: 4.3/5
| Formula & science | 4.4 |
|---|---|
| Ease of use | 4.6 |
| Safety & trust | 4.5 |
| Value | 3.8 |
| US & Canada availability | 4.2 |
Our rating is an editorial score based on the brand's published specs, independent reviews, safety and trust signals, value and availability in the US and Canada. It is not Amazon's customer rating, and brands do not pay for placement.
Frequently asked questions
What is in FortiFlora for dogs?
The active ingredient is the probiotic strain Enterococcus lactis SF68, formerly called Enterococcus faecium SF68. Purina guarantees 1 x 10^8 CFU per 1 g sachet, and the powder is microencapsulated. Each box holds 30 sachets. It is designed to be sprinkled on your dog's usual food.
Is FortiFlora the same on Amazon.ca and Amazon.com?
It is the same product line but sold under different listings: B09BDDNCFH on Amazon.ca and B00XEVJB84 on Amazon.com. Purina is also rolling out a newer FortiFlora PRO Synbiotic Action box with an added prebiotic, so compare the name on the listing with what you intend to buy.
Can puppies have FortiFlora?
Purina says the canine formula is suitable for puppies and adult dogs. How much and how often to give it depends on your dog, so follow the label and ask your vet, especially for very young puppies or dogs already on medication.
Does FortiFlora have a NASC seal or Health Canada NN?
Nestle Purina PetCare is a NASC Primary Supplier that passed the NASC facility audit, which is a company-level seal. We could not find a Health Canada NN number for FortiFlora on Purina's Canadian page or Canadian retailer listings, so we do not claim one.
This page is general information, not veterinary advice. Check with your vet before changing your pet's food or adding a supplement.
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