Purina Pro Plan Vet FortiFlora (Powder packet, 30 ct) vs Native Pet Probiotic

Plentum's comparison chart puts FortiFlora and Native Pet Probiotic Powder side by side, and the pairing shows up on TikTok too, so there's real search interest behind it. The split in the data is about depth versus breadth: FortiFlora's single strain, Enterococcus faecium SF68, carries five canine trials and a specific strain deposit number, while Native Pet lists four different species (Bacillus coagulans, Enterococcus faecium, and two Bifidobacterium species) without strain-level codes, backed by just one canine RCT of its own.

photoPurina Pro Plan VetPurina Pro Plan Veterinary Supplements FortiFlora Canine Probiotic PowderPowder packet · 30 ct · Shelf-stable
vs
photoNative PetNative Pet Probiotic PowderPowder · 60 ct · unstated

Which one, for what

A dog under a vet's care for acute diarrhea where the owner wants the most heavily studied single strain availablePurina Pro Plan Vet FortiFlora (Powder packet, 30 ct)FortiFlora's Enterococcus faecium SF68 has five canine RCTs and six total canine studies. Native Pet's four-species blend has one canine RCT and four total canine studies.
An owner who wants to know exactly which deposited strain is in the bottle, not just the species namePurina Pro Plan Vet FortiFlora (Powder packet, 30 ct)FortiFlora's organism is identified down to a specific strain code, SF68 (NCIMB 10415). Native Pet's four organisms are listed by genus and species only, with no strain codes in this data.
An owner whose dog needs a prebiotic fiber source built into the same productNative Pet ProbioticNative Pet's label lists organic inulin and organic pumpkin seed as prebiotic ingredients. FortiFlora lists no prebiotics at all.

Not veterinary advice. Each claim above is backed by the label row or study linked in the full table below.

Label, line by line

Green tint = the stronger value on that row, by the rule below
FieldPurina Pro Plan Vet FortiFlora (Powder packet, 30 ct)Native Pet Probiotic
OrganismsEnterococcus faecium SF68 (NCIMB 10415)Bacillus coagulans, Enterococcus faecium, Bifidobacterium animalis, Bifidobacterium bifidum
Strain-numbered1 of 10 of 4
CFU per daily dose100 million6 billion
CFU guaranteeunstatedunstated
PrebioticNone listedOrganic inulin (from Jerusalem artichoke) — 315 mg min per label guaranteed-analysis line, Organic pumpkin seed
FormPowder packetPowder
Dose by weight1 packet any weight1 scoop (~4 g) 1-50 lb · 2 scoop (~4 g) over 50 lb
StorageShelf-stableunstated
Canine studies (by strain)5 RCTs4 studies
Label verified2026-10-122026-10-12

Stronger value rule: more strain-named organisms, CFU guaranteed through expiry over at-manufacture, and more canine RCTs each count as stronger. Raw CFU count alone never does.

Purina Pro Plan Vet FortiFlora (Powder packet, 30 ct) on Amazon Native Pet Probiotic on Amazon Prices are on Amazon. We earn a commission; it doesn't change the table.

What owners report

Tagged from public posts mentioning either product. Counts, not opinions.

  • worked fast (n=43)
  • used with antibiotics (n=40)
  • no effect (n=28)
  • vet recommended (n=25)
  • price (n=8)

Asked about this pair

Can you give FortiFlora and Native Pet Probiotic Powder together?

We didn't find a combination study for these two. Native Pet's blend already includes Enterococcus faecium among its four strains, which overlaps genus-wise with FortiFlora's E. faecium SF68, so stacking both could mean extra dosing of a similar organism rather than something new. Ask your vet before combining them.

Native Pet lists 6 billion CFU versus FortiFlora's 100 million. Does that make Native Pet the stronger pick?

Not on its own. Neither label states its CFU count is guaranteed through expiry. What actually differs in the documented record is canine research — FortiFlora's single strain has five RCTs behind its labeled dose, while Native Pet's blend has one. A bigger raw CFU number doesn't change that gap.

Which one is cheaper or easier to find on Amazon?

Both have Amazon ASINs in our data (FortiFlora: B001650NNW; Native Pet: B08JD12FLY), so both are purchasable there. We don't have pricing data in this fact pack to say which costs less.