6 Best Probiotics for Dogs (UK 2026 Review)

Why We Like It

• Purina names the probiotic strain, Enterococcus faecium SF68, so buyers can identify the live bacteria rather than relying on a vague claim about gut health.
• Each sachet provides a stated 500 million colony-forming units (CFU), making the amount supplied clear when comparing formulas.
• The powder sprinkles straight onto a dog’s usual food, which is convenient for animals that dislike tablets or syringes.
• The manufacturer’s recommendation of one sachet a day is simple to follow, whatever your dog’s size.
• Its palatable formula can make food more appealing to a fussy eater, alongside its intended digestive-support role.
• Thirty individually portioned sachets provide a month’s supply at the standard daily serving, with no weighing or measuring required.

Why We Like It

• Its combination of live Enterococcus faecium and Preplex prebiotics brings bacterial and fibre-based digestive support together in one paste.
• Psyllium helps absorb water and maintain normal intestinal movement, which makes it particularly relevant when stools are loose.
• Pectin is included to help soothe and protect the gut lining during a digestive upset.
• Kaolin and montmorillonite act as binding ingredients, giving this formula a different purpose from an everyday probiotic food topper.
• The graduated 30ml syringe and adjustable dosing wheel help you dispense the amount specified for your dog’s weight.
• The artificial liver flavour and option to mix the paste into food give you practical choices when administering the manufacturer’s recommended short course.

Why We Like It

• Each capsule supplies two billion CFU of a named Enterococcus faecium strain, giving you a clearly specified probiotic rather than an unidentified bacterial blend.
• Preplex combines oligofructose and acacia gum to provide prebiotic ingredients alongside the live bacteria.
• The usual serving is one capsule daily, so the routine is easy to follow without calculating a different dose for each meal.
• Capsules can be given whole or opened and sprinkled onto food, which is helpful if your dog refuses to swallow one.
• The 50-capsule tub provides 50 days’ supply at the standard one-capsule serving, making the ongoing cost simple to work out.
• Clear manufacturer information on the bacterial strain and ingredients makes it easier to compare this daily supplement with other veterinary formulas.

Why We Like It

• Each tablet contains 200 million live Enterococcus faecium bacteria, providing a clearly stated amount for daily digestive support.
• The ActivBio blend combines mannan-rich ingredients, short-chain fructo-oligosaccharides and beta-glucans to complement the probiotic.
• The tablet format is easy to include in an everyday feeding routine, and YuMOVE says it can be crushed into food for dogs that are reluctant to take tablets.
• Weight-based directions help you choose an appropriate daily serving, from one tablet for dogs up to 10kg to four for dogs over 40kg.
• The 300-tablet pack offers a practical bulk-buy option: at the labelled serving, it lasts 300 days for a small dog or 75 days for a dog over 40kg.
• Its established formula and published feeding guidance make it easier to compare the ongoing cost with powders and capsules.

Why We Like It

• Each sachet contains one billion live Enterococcus faecium bacteria, offering an identifiable probiotic in a convenient powder format.
• The accompanying prebiotics help support the gut’s beneficial bacteria, making this more than a plain fibre supplement.
• Bentonite clay is included to help firm loose stools, which sets it apart from everyday digestive-support tablets.
• Added threonine supports the protective intestinal lining, while linseed meal contributes a source of dietary fibre.
• The powder can be sprinkled over food or mixed with a little warm water and given immediately, providing two practical feeding options.
• The six-sachet pack suits short-term use, with clear weight-based directions that help you calculate how quickly the pack will be used.

Why We Like It

• The named Enterococcus faecium strain supplies one billion CFU per sachet, giving owners a measurable probiotic ingredient to compare.
• Fibersol is included as a prebiotic to nourish beneficial gut bacteria alongside the live culture.
• An inactivated Bifidobacterium postbiotic distinguishes this formula from supplements containing only probiotics and prebiotics.
• Added vitamin B12 provides a defined nutritional component that can be relevant when discussing longer-term digestive support with a vet.
• Individual four-gram sachets can be added to a dog’s usual food, avoiding the need to measure powder from a large tub.
• Protexin publishes weight-based daily guidance, so owners can estimate how long the 30-sachet box will last before buying.