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Explore natural probiotics for dogs. Veterinarian formulated blends that help support gut health, digestion, and immunity. Clean, pure, and gut friendly.

The Best Natural Probiotics for Dogs

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Four Leaf Rover's promise is that our products are made with love in the usa, veterinarian formulated and made with non-gmo ingredients.

Certified plastic negative product, we remove 2x as much plastic waste from nature as our packaging uses

Oral Health

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Protect your dog’s gut with nature’s best! This expertly blended mix of soil-based probiotics and detoxifying clays helps cleanse heavy metals, pesticides, and other toxins for a healthier pup. Ideal for dogs living in the city or eating processed foods that need daily gut support.

Protect your dog’s gut with nature’s best! This expertly blended mix of soil-based probiotics and detoxifying clays helps cleanse heavy metals, pesticides, and other toxins for a healthier pup.
Ideal for dogs living in the city or eating processed foods that need daily gut support.

Jar of Protect soil-based probiotics, 4.1 ounces

Jar of Protect soil-based probiotics, 8.2 ounces

Includes soil-based probiotics for naturally balanced gut flora, supports the body from pesticide and toxin exposure

Saccharomyces Boulardii, Bentonite Clay, Chlorella, Humic & Fulvic Acid, Blueberry, Probiotics, and Dandelion & Burdock Root

Main active ingredients per 1 tsp: 1.45 g of Blueberry, 1.4 g of Bentonite Clay, and 200 mg of Chlorella Pyrenoidosa

Made with love in the USA, recycled packaging, 100% organic ingredients, veterinarian formulated

Protect

PROTECT - SOIL BASED PROBIOTICS

Protect 115.5g

Protect 231g

Fight yeast the natural way with Yeast Guard! Designed to balance the microbiome, it supports healthy skin, a shiny coat, and a fresh-smelling pup. Ideal for dogs with yeasty ears, frito-smelling feed, and yeast issues.

Fight yeast the natural way with Yeast Guard! Designed to balance the microbiome, it supports healthy skin, a shiny coat, and a fresh-smelling pup.
Ideal for dogs with yeasty ears, frito-smelling feed, and yeast issues.

Jar of Yeast Guard, which supports normal gut flora, 1.4 ounces

Supports normal detoxification of yeast, helps maintain proper gut flora

Organic ingredients including Pau D-Arco, Fennel, Goldenseal, Olive Leaf, Oregano, and Ginger Root

Active ingredients per 1/2 tsp: 1 g Proprietary Herb Blend, 310 mg C8/C10 MCT Powder, 62 mg Caprylic Acid, 41 mg Capric Acid

Yeast Guard

Digest is a carefully crafted enzyme supplement that supports proper digestion and healthy organ function, especially for senior dogs or those on processed diets. Let Digest help tackle digestive challenges and keep your pup thriving! Ideal for dogs with pancreas issues, or eating processed foods.

Digest is a carefully crafted enzyme supplement that supports proper digestion and healthy organ function, especially for senior dogs or those on processed diets. Let Digest help tackle digestive challenges and keep your pup thriving!
Ideal for dogs with pancreas issues, or eating processed foods.

Jar of Digest powder, a probiotic and enzyme blend, 1.2 ounces

Provides natural enzymes for proper digestion, veterinarian formulated

Main active ingredients per 1/2 tsp: 500mg of New Zealand Beef Liver and 300mg of New Zealand Beef Pancreas

Digest

Digest - Digestive Enzymes And Probiotics For Dogs

Gut Guard is designed to support the protective gut lining and mucous membrane, this supplement helps maintain a normal inflammatory response to everyday toxins. Ideal for dogs suffering from leaky gut.

Gut Guard is designed to support the protective gut lining and mucous membrane, this supplement helps maintain a normal inflammatory response to everyday toxins.
Ideal for dogs suffering from leaky gut.

Jar of Gut Guard, which supports a healthy gut lining, 3.5 ounces

Supports the protective layers of the gut, veterinarian formulated

Including L-Glutamine, Licorice Root, Organic Marshmallow Root, Organic Aloe Vera, Slippery Elm, and Organic Dandelion Root

Main active ingredients per 3.35 g: 1500 mg of L-Glutamine and 500 mg of N-Acetyl Glucosamine

Gut Guard

Take control of yeast overgrowth with Yeast Guard Plus! This vet-formulated bundle fights yeast at every level—breaking down biofilm, creating an inhospitable gut environment, and supporting a healthy gut lining. Save 20% and help your dog feel their best! Ideal for dogs with yeasty ears, frito smelling feed, and that have yeast and digestive issues.

Take control of yeast overgrowth with Yeast Guard Plus! This vet-formulated bundle fights yeast at every level—breaking down biofilm, creating an inhospitable gut environment, and supporting a healthy gut lining. Save 20% and help your dog feel their best!
Ideal for dogs with yeasty ears, frito smelling feed, and that have yeast and digestive issues.

Yeast Guard Plus kit, which includes Digest powder, Gut Guard powder, and Yeast Guard powder

Made with love in the USA, recycled packaging, made with non-gmo ingredients, veterinarian formulated

Yeast Guard Plus

Keep your dog's tummy happy and healthy with Bifido For Fido! This specially formulated probiotic blend is designed to nurture your dog’s gut biome, boost immunity, and promote overall wellness. Ideal for dogs prone to upset stomachs due to stress or anxiety.

Keep your dog's tummy happy and healthy with Bifido For Fido! This specially formulated probiotic blend is designed to nurture your dog’s gut biome, boost immunity, and promote overall wellness. 
Ideal for dogs prone to upset stomachs due to stress or anxiety.

Jar of Bifido for Fido probiotics, 1.8 ounces

Helps with occasional digestive distress, veterinarian formulated

Active ingredients per 1/2 tsp: FOS 851 mg, Organic Inulin 570 mg, Proprietary Probiotic Blend 50 billion CFU. No fillers

Bifido For Fido

Tough on gut stress, gentle on your dog—Saccharomyces Boulardii is a resilient probiotic yeast that thrives even in the presence of gut-harming drugs and chemicals. Ideal for dogs on long or short-term antibiotics.

Tough on gut stress, gentle on your dog—Saccharomyces Boulardii is a resilient probiotic yeast that thrives even in the presence of gut-harming drugs and chemicals.
Ideal for dogs on long or short-term antibiotics.

Jar of S. boulardii, a probiotic yeast for occasional digestive distress, 1.7 ounces

Powerful yeast-based probiotic, supports a healthy gut flora and lining

No fillers ever. Made with Saccharomyces Boulardii and Organic Inulin

Active ingredients per 1/2 tsp: 10 Billion CFU of Saccharomyces boulardii, 1056 mg of Organic Inulin from Jerusalem Artichoke

Made with love in the USA, recycled packaging, third party tested, made with non-gmo ingredients

Saccharomyces boulardii

Saccharomyces boulardii - Yeast-Based Probiotics For Dogs

Kibble Fixer brings life back to processed diets! With a powerhouse mix of digestive enzymes, probiotics, and antioxidants from organic fruits and veggies, it restores the vital nutrients missing in cooked foods. Ideal for dogs that need add nutrients to their process diets.

Kibble Fixer brings life back to processed diets! With a powerhouse mix of digestive enzymes, probiotics, and antioxidants from organic fruits and veggies, it restores the vital nutrients missing in cooked foods.
Ideal for dogs that need add nutrients to their process diets.

Pouch of Kibble Fixer functional meal topper for dogs, 3.6 ounces

Give life back to processed food. Includes digestive enzymes to support the pancreas and digestive organs

Including Grass-Fed Beef Liver, Organic Greens, Organic Blueberries & Cranberries, Digestive Enzymes, Soil-Based Probiotics

Made with love in the USA, recycled packaging, 100% grass-fed & grass-finished beef, made with non-gmo ingredients

Kibble Fixer

Probiotics For Dogs

Our grass finished beef collagen is rich in Type I and Type II collagen for comprehensive joint support. Connective tissue health Supports healthy joints Sustainable, clean sourcing

Our grass finished beef collagen is rich in Type I and Type II collagen for comprehensive joint support.
<ul>
<li>Connective tissue health</li>
<li>Supports healthy joints</li>
<li>Sustainable, clean sourcing</li>
</ul>

Collagen health supplement with type II collagen and chondroitin provides natural bone and joint support for dogs. 

Collagen provides targeted joint support and vitality at every life stage by promoting a healthy gut lining plus cartilage and bone health support in dogs.

Collagen bone and joint support for dogs dosage guide for small to extra large dogs. 

Premium grass finished bovine Collagen is easily absorbed for maximum bone, gut and joint support.

Collagen product facts with active ingredients grass-finished bovine collagen and chondroitin sulfate.

Collagen

22 Day(s), 30 Day(s), 60 Day(s), 90 Day(s)

22 Day(s), 30 Day(s), 45 Day(s), 90 Day(s)

Give your dog a mental edge with Lion’s Mane mushroom! Rich in unique compounds like hericenones and erinacines, this natural brain booster supports cognitive and neural health for dogs of all ages. Ideal for dogs that need added cognitive support.

Give your dog a mental edge with Lion’s Mane mushroom! Rich in unique compounds like hericenones and erinacines, this natural brain booster supports cognitive and neural health for dogs of all ages.
Ideal for dogs that need added cognitive support.

Jar of Lion's Mane Mushrooms powder, 1.2 ounces

Enhances healthy brain function, helps senior dogs age gracefully

One active ingredient, Organic lion's mane mushroom extract. No fillers

Made with love in the USA, recycled packaging, 100% organic ingredients, tested high in beta-glucans

Lion's Mane

Lion's Mane - Organic Mushroom Extract For Dogs

30 Day(s), 60 Day(s), 120 Day(s), 240 Day(s)

20 Day(s), 30 Day(s), 40 Day(s), 60 Day(s)

Safe-Sea is the cleaner, greener alternative to fish oil! This premium blend of green-lipped mussels and ahiflower oil delivers pure, heat-free omega support for your dog’s overall health. Ideal for dogs with a dull coat, or dander and need a powerful omega supplement.

Safe-Sea is the cleaner, greener alternative to fish oil! This premium blend of green-lipped mussels and ahiflower oil delivers pure, heat-free omega support for your dog’s overall health.
Ideal for dogs with a dull coat, or dander and need a powerful omega supplement.

Safe-Sea is better than fish oil because it naturally supports healthy skins with healthy omega fats including SDA and GLA. 

Safe-Sea dosage guide for the right amount to give to your dog daily. 

Safe-Sea is veterinarian formulated with natural ingredients like ahiflower, green lipped mussels and astareal ataxantin.

Safe-sea is sustainable, resists oxidation, and is easily absorbed, unlike other fish and marine oils

Probiotics For Dogs

Oral Health

Protect

Yeast Guard

Digest

Gut Guard

Yeast Guard Plus

Bifido For Fido

Saccharomyces boulardii

Kibble Fixer

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