Sources we use

• Manufacturer documentation — Purina Pro Plan Veterinary Supplements, Nutramax (Proviable), Honest Paws, and competitor brand pages
• Veterinary literature on Enterococcus faecium SF68, the active strain in FortiFlora
• Veterinary teaching resources from major schools (Tufts Cummings, Cornell, UC Davis publicly available content)
• FDA Center for Veterinary Medicine guidance on probiotic supplements
• Aggregated pet owner discussion in places like the Pet, Vet, and DVM subreddits, Chewy reviews, and Amazon Q&A — to identify what real owners are actually concerned about

What we verify

• Active ingredient claims (strain, CFU counts, formulation differences between species versions)
• Pricing across major retailers (Chewy, Amazon, Pro Plan Vet Direct) — refreshed quarterly
• Availability of mentioned alternative products
• Affiliate link integrity and proper attribution

What we don't claim

• We don't claim our content is veterinarian-reviewed. It isn't. Talk to your vet for health decisions.
• We don't claim to provide diagnostic or treatment advice. We provide context for questions you might want to bring to a vet.
• We don't claim our recommendations are personalized to your specific pet. Every situation is different.

Updates and corrections

Pages are updated as new information becomes available — typically a major refresh once per year, with smaller updates as needed. The "Updated" date on each page reflects the last meaningful change. For corrections, see the contact page.

Affiliate transparency

This site participates in the Amazon Associates Program. We earn commissions on qualifying purchases. See the full affiliate disclosure.