If you have spent any time around pet health lately, you will have noticed the word “biotics” doing a lot of heavy lifting. Prebiotics, probiotics, synbiotics and now postbiotics. It can feel like a new term arrives every year, and it is fair to ask whether each one actually matters for the dogs and cats in your care.

The short answer is yes. Each member of the biotics family plays a different role in supporting a healthy gut, and the gut does far more than digest food. It is central to immune function, nutrient absorption and even behaviour, through what is often called the gut–brain axis. That is why, this year, we have brought postbiotics into products across the Nutravet range. Here is what they are, how they fit alongside the biotics you already know, and why we think they are worth getting excited about.

Meet the biotics family

The easiest way to think about biotics is as a simple chain: food, workers and the useful things those workers produce.

Prebiotics – the food. Prebiotics are non-digestible plant fibres that beneficial gut bacteria use as fuel. By feeding the “good” bacteria selectively, they help those populations grow and outcompete problem bacteria. Common examples include MOS (mannan-oligosaccharides), FOS (fructooligosaccharides), inulin, psyllium husk, chicory root and beet pulp.

Probiotics – the workers. Probiotics are live beneficial bacteria. Adding them boosts the numbers of helpful microbes in the gut and helps crowd out unwanted ones. In the UK, only certain strains are licensed for use in dogs, such as Enterococcus faecium NCIMB 10415 and Bacillus velezensis DSM 15544. Quality matters here: a probiotic only works if the right strain reaches the gut alive, in high enough numbers to make a difference.

Synbiotics – the partnership. When prebiotics and probiotics are combined in one product, the result is a synbiotic. The fibre gives the live bacteria something to feed on, supporting them as they establish.

Postbiotics – the output. Postbiotics are the beneficial compounds produced when probiotics ferment prebiotics in the gut, along with the inactivated bacteria and their cell components. They are the newest member of the family, and the focus of this year’s range update.

So what exactly are postbiotics?

Postbiotics are not live bacteria. Instead, they are the beneficial substances and structures that bacteria leave behind. They can include:

•       Metabolites, such as short-chain fatty acids and functional proteins

•       Inactivated (non-living) microorganisms

•       Bacterial cell components, such as cell wall fragments

These components interact directly with the body’s own pathways. That is an important distinction. A probiotic has to arrive alive, settle in and start producing useful compounds. A postbiotic delivers those compounds directly.

In fact, many of the benefits long associated with pre- and probiotics may come down to the postbiotic compounds they produce. Research points to a range of potential benefits, including:

•       Supporting a balanced gut microbiota

•       Aiding digestion and supporting intestinal health

•       Strengthening the gut’s epithelial barrier

•       Antioxidant effects

•       Helping to normalise the systems that control inflammation

•       Supporting immunity

It is worth being honest that postbiotics are a newer area of science, and the evidence base is still growing. But the direction of travel is clear, and it is why postbiotics are appearing more often in both human and veterinary nutrition.

Why postbiotics make sense

They are more stable. Live probiotics are delicate. Heat, moisture and processing can reduce their numbers, and some do not survive the journey through the stomach. Because postbiotics are not alive, they are far less likely to be damaged during manufacturing or gut transit. That makes them well suited to practical formats like chews and pastes.

They are a more direct route. Postbiotics can be used in all the typical cases where you might reach for pre- and probiotics, but they deliver the active compounds without relying on live bacteria to produce them first.

They can be a safer option for vulnerable patients. Where live bacteria may be contraindicated, for example in animals with a severely weakened immune system, postbiotics offer a way to support the gut without introducing live organisms.

They support responsible antimicrobial use. Pre-, pro- and postbiotics can all help rebalance the gut microbiota, which can help reduce reliance on antimicrobials unless they are truly needed.

Postbiotics across the Nutravet range

This year we have added postbiotics to products across our digestive, joint and calming categories. Here is where you will find them.

Nutrabio Advanced Powder offers triple-action daily digestive support for dogs and cats, combining prebiotics, postbiotics and high levels of vitamins B12 and B9. Its postbiotic, EpiCor®, provides bioactive metabolites from yeast fermentation that support the gut environment and immune function. It comes in weight-specific sachets that are simply sprinkled onto food.

Nutraquin Chew supports joints and mobility with eggshell membrane (Ovopet), AKBOSS boswellia extract and omega-3, plus pre- and postbiotics. These support the gut so that key joint nutrients are more readily absorbed, an idea known as the gut–joint axis.

Nutracalm Daily Calm Chews combine L-tryptophan, passionflower and taurine with pre-, pro- and postbiotics. Around 90% of serotonin is produced in the gut, so supporting the microbiome is a natural partner to calming support through the gut–brain axis.

The bottom line

Prebiotics feed the good bacteria, probiotics add more of them, and postbiotics deliver the beneficial compounds those bacteria produce. Used together, they offer a more complete way to support gut health, and with it digestion, immunity, mobility and behaviour.

Postbiotics are not a replacement for good diagnosis or veterinary care, and the science is still developing. But their stability and direct action make them a valuable addition, which is why we are proud to include them across the Nutravet range this year.

Want to learn more? Visit the Nutravet Training Hub for product videos and webinars or speak to your Area Sales Manager about samples and support.