Multistrain pet probiotic containing four strains of bacillus subtilis.

Give your pets the health boost they deserve with the power of multistrain Bacillus subtilis—a game-changing probiotic that supports long-term wellness from the inside out.

Unlike single-strain probiotics, a multistrain pet probiotic formulation of Bacillus subtilis delivers a broader spectrum of benefits thanks to the diverse functionalities of each strain. This hardy, spore-forming bacterium survives the harsh journey through the digestive system, arriving intact where your pet needs it most. Once there, it goes to work promoting a balanced gut microbiome, aiding in nutrient absorption, and supporting immune function.

What does that mean for your furry friend? It means fewer tummy troubles, better stool consistency, and improved resilience against common pathogens. Pets on Mrs Martin’s DEFEND Bacillus subtilis often show signs of increased energy, shinier coats, and even calmer behavior—because a healthy gut doesn’t just impact digestion, it influences everything from mood to mobility.

Whether you have a finicky feline or a loyal canine, a multistrain Bacillus subtilis supplement fits seamlessly into their routine. It’s suitable for all breeds and life stages, from playful pups to senior companions.

Backed by years of scientific research and proven in both veterinary settings and happy households, Bacillus subtilis is the smart, natural way to support pet wellness from within. Choose a probiotic that’s as resilient and diverse as your pets—because when their gut thrives, they do too.

Ready to elevate your pet’s vitality the natural way? Make multistrain Bacillus subtilis part of their daily health routine and see the difference a balanced gut can make.

Bacillus subtilis stands out among animal probiotics for its resilience, versatility, and proven benefits—especially when compared to more fragile strains like Lactobacillus or Bifidobacterium.

Here’s how it stacks up:

• Survivability: Unlike many probiotics that struggle to survive heat, moisture, or stomach acid, Bacillus subtilis forms hardy spores. These spores protect the bacteria until they reach the gut, ensuring maximum effectiveness.
• Shelf stability: Thanks to its spore-forming nature, Bacillus subtilis maintains potency over time, even in less-than-ideal storage conditions. This makes it ideal for pet supplements that need to stay viable on the shelf.
• Digestive enzyme production: It naturally produces enzymes like amylase, protease, and lipase, which help break down carbs, proteins, and fats—supporting dogs with sensitive stomachs or poor digestion.
• Immune and gut health: Like other probiotics, it promotes a balanced microbiome and supports immune function. But Bacillus subtilis also produces antimicrobial compounds that help suppress harmful bacteria, giving it an edge in gut defense.
• Anti-inflammatory effects: Research suggests it may reduce gut inflammation, which is especially helpful for dogs with chronic digestive issues like IBD.

While other probiotics like Lactobacillus acidophilus or Enterococcus faecium are beneficial, they often require refrigeration and may not survive the digestive tract as reliably. That’s why many top-tier pet supplements like Mrs Martin’s now favor Bacillus subtilis.