Visbiome Vet and FortiFlora get compared constantly online, thepetvet.com runs a 'FortiFlora vs Alternatives' piece and a Maddie's Fund vet forum thread points straight at Visbiome, largely because of the CFU gap: FortiFlora is labeled at 100 million CFU, Visbiome at up to 225 billion. But CFU isn't the whole story in this data. FortiFlora carries five canine RCTs and six canine studies and ships shelf-stable with an Amazon listing; Visbiome lists zero canine RCTs or studies here and needs refrigeration.
Not veterinary advice. Each claim above is backed by the label row or study linked in the full table below.
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.
Tagged from public posts mentioning either product. Counts, not opinions.
Not by itself, and this is a case where it really shouldn't decide the choice. FortiFlora is the one with canine RCTs and studies logged in this fact pack; a bigger CFU count with no study count attached isn't a substitute for that.
Visbiome Vet's species_for field covers both dogs and cats. FortiFlora's species_for field is listed as dog only, though the forum tag data collected for this pair does include a small number of 'for cat too' mentions.
The tag counts gathered for this pair skew toward 'used with antibiotics,' 'worked fast,' and 'vet recommended,' with a smaller but real number of 'no effect' and dosage-question tags too. These counts aren't broken out by which specific product they refer to in this data.