The colony-forming unit (CFU) is the currency of the probiotic industry. It appears on every label, dominates every marketing claim, and drives consumer purchasing decisions. “50 billion CFU!” “100 billion CFU!” — bigger numbers imply better products. But a growing body of peer-reviewed evidence reveals an uncomfortable truth: the CFU printed on the label frequently … Read more
The supplement aisle has grown crowded. Probiotics, prebiotics, synbiotics — and now postbiotics. For veterinary professionals and informed pet owners alike, the proliferation of “-biotic” terminology creates genuine confusion about what each category actually delivers, how it works, and whether the evidence supports its use. This guide cuts through the marketing noise with peer-reviewed definitions, … Read more
The supplement industry generates claims faster than the scientific literature can test them. “Clinically proven!” “Vet recommended!” “Backed by science!” — these phrases appear on labels and websites with little regard for what they actually mean. For veterinary professionals, the ability to evaluate these claims against the evidence hierarchy is not optional — it is … Read more
The dog supplement market is projected to exceed $2 billion annually, with thousands of products competing for owner attention. Labels promise joint support, gut health, immune boosting, anxiety relief — often all in a single chew. But behind the marketing, the regulatory framework governing these products is thinner than most owners realize. This checklist provides … Read more
The question “probiotic or postbiotic?” is increasingly common in veterinary practice. Owners arrive with products purchased online, asking whether the live-culture powder is superior to the heat-killed alternative, or whether they should be using both. The honest answer is nuanced: these are mechanistically distinct interventions with different evidence profiles, different strengths, and different limitations. This … Read more
The probiotic industry measures potency in colony-forming units — a metric that is, by its nature, unstable. CFU counts degrade from the moment of manufacture, affected by temperature, moisture, oxygen, and time. The number on the label is a snapshot of a dying population. Postbiotics, by contrast, are measured in milligrams of inactivated material — … Read more
Canine halitosis is not merely a cosmetic nuisance. It is a clinical sign — most often of periodontal disease, which affects over 80% of dogs by three years of age (Stella et al., 2018; PMID: 30234113). The pet supplement industry has responded with an avalanche of “oral health” products: dental chews, water additives, probiotic powders, … Read more
The oral probiotic market for pets operates on an intuitive premise: introduce beneficial bacteria to the mouth, they colonize, and they competitively exclude the pathogens responsible for periodontal disease and halitosis. It is a compelling narrative. It is also, according to the best available evidence, mechanistically implausible. A 2026 study published in Frontiers in Veterinary … Read more
Walk the supplement aisle — physical or digital — and the arms race is obvious. Products compete on a single axis: colony-forming units. Five billion. Thirty billion. Seventy billion. Two hundred billion. The implicit message is unambiguous: more organisms equals better outcomes. It is an intuitive heuristic. It is also, according to the best available … Read more
