Benefits
Ingredients
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Jar of Yeast Guard, which supports normal gut flora, 1.4 ounces
Supports normal detoxification of yeast, helps maintain proper gut flora
30 day medium dog supply, 31-60 lbs
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
Made with love in the USA, recycled packaging, 100% organic ingredients, veterinarian formulated
Certified plastic negative product, we remove 2x as much plastic waste from nature as our packaging uses product image
Jar of Yeast Guard, which supports normal gut flora, 1.4 ounces
Supports normal detoxification of yeast, helps maintain proper gut flora
30 day medium dog supply, 31-60 lbs
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
Made with love in the USA, recycled packaging, 100% organic ingredients, veterinarian formulated
Certified plastic negative product, we remove 2x as much plastic waste from nature as our packaging uses product image

Yeast Guard

$39.99
$39.99
$39.99

Yeast Guard is a powerful blend of organic herbs that helps gently cleanse yeast in dogs without harmful side effects.

  • Helps detoxify from yeast
  • Maintains a healthy gut lining
  • Veterinarian formulated
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Free shipping on orders $49+. Arrives in 2-5 days. Free, easy 60 day returns.

Yeast Guard is a powerful blend of organic herbs that helps gently cleanse yeast in dogs without harmful side effects.

  • Helps detoxify from yeast
  • Maintains a healthy gut lining
  • Veterinarian formulated

Best Product!

"Archie is my 2 1/2-year-old cream colored golden doodle. So I wondered about the dark fur around his mouth and paw. His vet said it was from yeast in his body/G.I. system. We tried another product which helped a little. After speaking with the proprietor of a wonderful pet supply store in Deland Florida, I tried Yeast Guard. Archie’s vet wholeheartedly approved of the product. And now all that dark hair/fur is back to its natural color! Terrific product! Thank you!"

Dorothy Ann S.

Gentle Yeast Cleanse

Yeast overgrowth is a common cause of unhealthy skin and coat, brown staining and an unpleasant odor. Yeast Guard supports a healthy microbiome and helps keep yeast populations in check. 

  • Helps naturally detoxify from yeast: This premium blend of herbs is hard on yeast yet friendly to the gut. Yeast Guard is a gentle cleanse that will help detoxify the body.
  • Veterinarian formulated: You can feel good knowing this supplement was formulated by a holistic veterinarian.
  • Organic and non-GMO Ingredients: The herbs in Yeast Guard are organic for a super-premium supplement that's gut friendly.
  • No inactive ingredients: If it's not on the label, it's not in the jar.

Premium Ingredients

Pau d'arco
Pau d'arco

Pau d'arco, derived from the bark of the Tabebuia tree, contains compounds such as lapachol and beta-lapachone, which benefit gut health and promote a healthy balance of gut flora. Additionally, Pau d'arco can help with irritation in the gastrointestinal tract.

Organic goldenseal
Organic goldenseal

Goldenseal is renowned for its gut health benefits, primarily due to its active compound, berberine, which supports a healthy gastrointestinal microbiome. It also promotes healthy digestion and enhances the quality of the mucous membranes, supporting the overall health of the digestive system.

Because we use only sustainable ingredients, we don't use wildcrafted goldenseal because it is considered an at-risk species due to over-harvesting. Choosing cultivated goldenseal not only supports conservation efforts but also ensures that the product is free from contaminants that might be present in wild populations, making it a safer and more ethical choice.

C8/C10 MCT powder
C8/C10 MCT powder

Medium chain triglyceride (MCT) oil is highly beneficial for gut health and managing yeast issues due to its concentrated content of caprylic (C8) and capric (C10) acids. These medium-chain fatty acids have been shown to help the body detoxify from yeast overgrowth. Additionally, MCT oil can help balance the gut microbiome and enhance digestion.

Our MCT oil is free of lauric acid because it is metabolized like a long-chain fatty acid in the body, requiring a more complex process for digestion and absorption.

Organic olive leaf
Organic olive leaf

Olive leaf extract benefits gut health by discouraging the proliferation of abnormal bacteria and yeast in the digestive tract and promoting a healthy balance of gut flora. The active compound oleuropein, also supports the immune system, enhancing the body's ability to defend against gastrointestinal issues. Additionally, its antioxidant effects can protect the gut lining from oxidative stress and damage, further supporting the integrity and function of the digestive system.

Organic ginger root
Organic ginger root

Supports a healthy skin and gut biome and helps reduce oxidative damage.

Organic fennel
Organic fennel

Fennel seeds are beneficial for gut health and detoxification from yeast overgrowth. Fennel seeds also contain anethole, a compound that can help soothe the digestive tract and relax the smooth muscles of the gastrointestinal system, improving overall digestion and contributing to a healthier gut environment.

See all ingredients

Pau d-arco

Ingredients

Pau d'arco
Pau d'arco

Pau d'arco, derived from the bark of the Tabebuia tree, contains compounds such as lapachol and beta-lapachone, which benefit gut health and promote a healthy balance of gut flora. Additionally, Pau d'arco can help with irritation in the gastrointestinal tract.

Organic goldenseal
Organic goldenseal

Goldenseal is renowned for its gut health benefits, primarily due to its active compound, berberine, which supports a healthy gastrointestinal microbiome. It also promotes healthy digestion and enhances the quality of the mucous membranes, supporting the overall health of the digestive system.

Because we use only sustainable ingredients, we don't use wildcrafted goldenseal because it is considered an at-risk species due to over-harvesting. Choosing cultivated goldenseal not only supports conservation efforts but also ensures that the product is free from contaminants that might be present in wild populations, making it a safer and more ethical choice.

C8/C10 MCT powder
C8/C10 MCT powder

Medium chain triglyceride (MCT) oil is highly beneficial for gut health and managing yeast issues due to its concentrated content of caprylic (C8) and capric (C10) acids. These medium-chain fatty acids have been shown to help the body detoxify from yeast overgrowth. Additionally, MCT oil can help balance the gut microbiome and enhance digestion.

Our MCT oil is free of lauric acid because it is metabolized like a long-chain fatty acid in the body, requiring a more complex process for digestion and absorption.

Organic olive leaf
Organic olive leaf

Olive leaf extract benefits gut health by discouraging the proliferation of abnormal bacteria and yeast in the digestive tract and promoting a healthy balance of gut flora. The active compound oleuropein, also supports the immune system, enhancing the body's ability to defend against gastrointestinal issues. Additionally, its antioxidant effects can protect the gut lining from oxidative stress and damage, further supporting the integrity and function of the digestive system.

Organic ginger root
Organic ginger root

Supports a healthy skin and gut biome and helps reduce oxidative damage.

Organic fennel
Organic fennel

Fennel seeds are beneficial for gut health and detoxification from yeast overgrowth. Fennel seeds also contain anethole, a compound that can help soothe the digestive tract and relax the smooth muscles of the gastrointestinal system, improving overall digestion and contributing to a healthier gut environment.

Organic oregano leaf
Organic oregano leaf

Oregano leaf is highly effective in promoting gut health and managing yeast issues due to compounds like carvacrol and thymol. These substances can inhibit the growth of abnormal bacteria and fungi, helping to maintain a balanced and healthy gut microbiome. Additionally, oregano leaf can help with digestive discomfort and supporting the immune system, making it a valuable natural remedy for improving gut health and addressing yeast overgrowth.

Organic thyme leaf
Organic thyme leaf

Thyme leaf offers significant benefits for gut health and managing yeast issues, thanks to its high content of thymol and carvacrol. These compounds help discourage the growth of abnormal bacteria and fungi and aid in digestion.

Feeding Directions

Give orally daily or as directed by your veterinarian.

 Net Contents: 1.4oz (39.3g)

Body Weight

1-30 lbs
31-60 lbs
61-100 lbs
101+ lbs

Amount per Day

1/4 tsp daily
1/2 tsp daily
1 tsp daily
2 tsp daily

Daily Cost

$0.67/day
$1.33/day
$2.67/day
$5.72/day

Frequently Asked Questions

How does Yeast Guard help support dogs with yeast issues?
How does Yeast Guard help support dogs with yeast issues?

Yeast Guard uses a blend of cleansing herbs that help reduce excess yeast and support a healthy microbial balance in the gut and on the skin. It works gently to promote a clean internal environment where yeast can’t easily take hold.

Why do some dogs develop yeast imbalance?
Why do some dogs develop yeast imbalance?

Antibiotics, processed diets, and stress can disrupt the gut’s natural flora, allowing yeast to overgrow. Yeast Guard helps the body restore balance by supporting normal detoxification and digestive function.

How does Yeast Guard support a healthy gut environment?
How does Yeast Guard support a healthy gut environment?

The herbal blend helps break down excess yeast buildup and supports the body’s natural cleansing systems, encouraging an environment where beneficial microbes can flourish naturally.

What makes Yeast Guard different from other yeast formulas?
What makes Yeast Guard different from other yeast formulas?

Instead of relying on harsh synthetic antifungals, Yeast Guard uses natural plant extracts to help maintain microbial balance safely and effectively. It supports cleansing from the inside out, without putting stress on the gut or liver.

What role do the herbal ingredients play?
What role do the herbal ingredients play?

Herbs like pau d’arco, oregano, and olive leaf are known for their natural cleansing properties. They help the body manage yeast levels, support normal inflammatory responses and aid in detox pathways.

Can Yeast Guard be used every day?
Can Yeast Guard be used every day?

Yes. It’s gentle enough for daily use although we recommend switching to Protect, our everyday probiotic, once you see improvement in your dog. 

How long should I give Yeast Guard to my dog?
How long should I give Yeast Guard to my dog?

Most dog owners use Yeast Guard for 30 to 60 days to support cleansing, then transition to Protect for daily maintenance.

Can Yeast Guard be used with other Four Leaf Rover supplements?
Can Yeast Guard be used with other Four Leaf Rover supplements?

Absolutely. We recommend combining Yeast Guard with Digest to break down yeast’s protective biofilm, and Gut Guard to address any gut lining distress.

Does Yeast Guard contain any fillers or synthetic additives?
Does Yeast Guard contain any fillers or synthetic additives?

Never. It’s free of grains, soy, dairy, and artificial ingredients — only pure, natural components you can trust.

How soon will I notice a difference?
How soon will I notice a difference?

Every dog is different, but many dog owners notice improved skin comfort and reduced odor within a few weeks of consistent use. For best results, feed your dog a fresh, low carbohydrate diet. 

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Yeast Guard Reviews

Who We Are

In Memory of Simon & Aaron

The story of Four Leaf Rover started as a tragedy. Our founder Dana Scott lost two dogs from toxic sprays they were exposed to in the fields surrounding her home. In a frantic effort to save her dogs and protect her remaining dog family, Dana connected with most of the leading holistic veterinarians around the world about the most effective natural remedies. As Dana researched remedies, she found nearly all contained hidden or harmful ingredients. Four Leaf Rover began as a promise to Dana's lost dogs that all dogs deserve super premium products with natural ingredients that are thoroughly tested to be low in harmful pesticides and heavy metals. With a mission of quality, transparency and sustainability, Four Leaf Rover is making the world a better place for dogs and the people who love them.
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Yeast Guard

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© 2025, Four Leaf Rover - The content on this website is not meant to replace veterinary advice. Please support the hard working holistic vets who make this information possible. To find a holistic or homeopathic vet near you or to find one who will do phone consultations, visit The Academy Of Veterinary Homeopathy.