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K9 Yeast Defense
Dog Yeast Supplement
For Dogs Over 6 Pounds
NEW! Now Get 50% More Per Bottle! K9 Yeast Defense is an all natural canine skin yeast infection treatment. Now available in a 90 capsule value size, an upgrade from our previous 60 capsule option. Same Great Formula. Please note that the texture and color of the powder inside the capsules varies from batch to batch.
90 capsules
Excellent Value! One bottle lasts between 1 1/2 - 4 months for most dogs.
NOTE: The K9 Yeast Defense capsules will need to be opened and divided for administration to small and medium sized dogs. If you have difficulty opening capsules, please keep this in mind before ordering.
What Is K9 Yeast Defense?
K9 Yeast Defense is a dog yeast supplement containing natural anti-fungal ingredients scientifically proven to work:
- Caprylic Acid For Dogs is a naturally occurring fatty acid with proven antifungal properties. It can help combat yeast overgrowth in the dog's body. Here are some ways that caprylic acid helps dogs with yeast:
Antifungal Properties: Caprylic acid is known for its potent antifungal properties. It can help inhibit the growth of yeast, including the common Candida species responsible for many dog yeast infections.
Balances Gut Flora: It supports a healthy balance of microorganisms in the gut by targeting harmful yeast overgrowth. This is essential as an overgrowth of yeast can disrupt the natural balance of the intestinal flora.
Supports Digestive Health: Caprylic acid for dogs can promote better digestion and nutrient absorption, which is beneficial for overall health. A well-functioning digestive system can help prevent yeast overgrowth.
- Pau d'Arco For Dogs (Tabebula heptaphylla) contains compounds with antifungal and immune-stimulating properties. Here are some ways that pau darco helps dogs with yeast:
Antifungal Properties: Pau d'arco contains compounds, such as lapachol and beta-lapachone, that have demonstrated antifungal properties. These components can help inhibit the growth of yeast, including Candida, which is a common cause of yeast infections in dogs.
Immune Support: Pau d'arco is believed to have immune-enhancing properties. By strengthening the immune system, it can assist the body in combating yeast overgrowth and preventing recurrent infections.
Anti-Inflammatory: Inflammation often accompanies yeast infections, leading to symptoms like itching and discomfort. Pau d'arco's anti-inflammatory properties can help alleviate these symptoms, improving your dog's comfort.
Supports Gut Health: Pau d'arco for dogs may also support a healthy gastrointestinal tract, which is essential in preventing the overgrowth of yeast in the digestive system.
- Grapefruit Seed Extract contains compounds that exhibit potent antifungal activity, especially in the gastrointestinal tract where yeast issues often originate.
- Echinacea Root (Echinacea angustifolia) is known for its immune-boosting properties. It can enhance the dog's immune system, helping it better fight off yeast-related problems.
- Oregano is a natural herb with strong antimicrobial and antifungal properties. It can help control yeast overgrowth in the dog's system.
The blend of ingredients in K9 Yeast Defense work synergistically to promote a balanced internal environment for dogs combating yeast infections. We add Garlic Bulb Concentrate to help reduce inflammation in the mouth and gastrointestinal tract, while Sodium Copper Chlorophyllin helps to detoxify the liver and the intestinal tract. Essential minerals Selenium and Zinc, both in citrate form for optimal absorption, promote liver health and stimulate immune response. Our Proprietary Enzyme Blend supports the digestion for optimal nutrient absorption, helping to relieve your dog's yeast symptoms from the inside out.
Graydon
"Graydon developed a yeast overgrowth after a large allergic reaction to Mayfly bites. I’m not sure what the connection is. His belly, paws and anus became covered with yeast. He was super itchy and uncomfortable. I googled and found Ask Ariel. As a nutritionist, I was already quite knowledgeable about supplements and also quite wary. As soon as I read about all the products Ask Ariel had to offer, I knew I had the right place! I started Graydon on the recommended yeast protocol as well as a raw diet. It all worked. After about a year I eased him back to kibble and slowly came off all supplements except the probiotics. He remains yeast free only flaring up in May when the Mayflies are biting! Thanks so much to your team for such smart and clean products and for caring so much!" - Caroline, New York
Graydon uses the following products from Ask Ariel: Power Probiotic, AllerEaze, K9 Yeast Defense, and Olive Leaf Extract.
Dog Yeast Infection Symptoms
What are the symptoms of a yeast infection in dogs? Typically, dogs experience chronic skin infections (pyoderma), skin redness, paw yeast infections, doggie odor, chronic ear infections, thickened skin (often called "elephant skin"), darkened skin (hyperpigmentation), and behaviors like paw chewing or genital licking. Most dogs have been diagnosed with yeast infections in the groin, ears, between the toes or under the armpits.
If your veterinarian has previously diagnosed yeast or your pet has taken prednisone or antibiotics, this can lead to yeast overgrowth because these medications kill the good bacteria that combat yeast. That is why your vet might prescribe antifungal medication when antibiotics are needed.
Dog Skin Yeast Infection Symptoms
Constant licking and scratching
Musty, smelly "cheese" odor even after bathing
Discoloration/darkening of the skin and fur
Redness of the skin
Chewing on itchy paws
Yeast Infections in Dog's Ears
Scratching at itchy ears
Tilting its head
Chronic ear infections
Wax residue and/or scabbing at the ear opening
Dakota
"I want to let you know how great Dakota, our Golden Retriever that we rescued, is doing. When we got him, he had bad ear infections that he had for months, and his skin was so black in the armpit and groin areas that we thought it was ground in dirt. He also had acid reflux and would bring up bile several times a day. It has taken several months, but the blackened skin (from yeast) is almost back to normal thanks to K9 Yeast Defense. I wish we had taken “before” pictures of his skin because the difference is remarkable. This is the best supplement for dogs with yeast infections. And, for his acid reflux, we started using your supplements (Power Probiotic, K9 Digestive Enzymes, Gastro ULC and Soothing Digestive Relief). I can’t forget to mention using your food recommendations. His ears didn’t start to clear up until we got him eating food that he could tolerate. Thank you so much for your supplements and all your help. Dakota is a much happier dog thanks to you!" - Pat & Tim, Pennsylvania
Why Is K9 Yeast Defense Sold As A Package With Power Probiotic?
While you can purchase K9 Yeast Defense on its own, to achieve the most favorable results, it's important to combine it with the best probiotic for dog yeast infections: Power Probiotic. Simply eliminating yeast without replenishing the beneficial bacteria won't be as effective.
Power Probiotic contains the best probiotics for dogs with yeast. Power Probiotic is a multi-strain probiotic supplement that promotes the growth of friendly bacteria. Contains 6 powerful strains along with prebiotics to increase absorption and survival of the bacteria. Made in the USA under strict GMP standards, Power Probiotic is 3rd party tested and certified. Using Power Probiotic is essential if your dog has taken steroids or antibiotics, as these medications reduce the population of friendly bacteria. Easy and convenient to use, Power Probiotic can be in and out of refrigeration without decreasing effectiveness. This makes it perfect for travel. Pure, safe and natural - most pets love the taste of Power Probiotic.
Combine K9 Yeast Defense With Our Other Supplements For Best Results
If your pup has experienced yeast infections, ear troubles, skin issues, or allergies, the best results can be achieved by combining K9 Yeast Defense with our other allergy and anti-yeast supplements for dogs.

NOT Drops fight bacterial infections. Many pets suffering from yeast issues also struggle with bacterial overgrowth, which often requires antibiotic treatment. Using K9 Yeast Defense without addressing the potential for bacterial overgrowth leaves your pet's system out of balance. The NOT Drops help relieve the symptoms associated with yeast die-off. This is very important when using any dog yeast infection treatment, but especially if your dog is just finishing antibiotics.
 Olive Leaf Extract For Pets is a powerful antibacterial and antifungal supplement for dogs. Research has found that olive leaf extract's active ingredient, oleuropein, helps fight against pathogens while causing no harm to healthy bacteria in your dog's gut and mucous membranes. Use Olive Leaf Extract along with K9 Yeast Defense, our dog yeast supplement, and Power Probiotic for synergistic treatment of ear and yeast skin infections in dogs. Some clients report it has cleared up blackened skin.
 AllerEaze contains quercetin and nettles, ingredients that have been scientifically proven to suppress allergic responses and histamine release. Many dogs with chronic yeast infections have a history of food and/or environmental allergies. Quercetin has been referred to as a natural “Benadryl" due to it's antihistamine and anti-inflammatory properties. AllerEaze helps control allergies, itching, redness, hot spots, chewing, licking, etc.
Tango
"The K9 Yeast Defense has worked miracles!!! Tango isn't licking at his genitals and his itching has improved so much. It the best supplement for dogs with a yeast infection." - Barber Family, California
What To Feed When A Dog Has A Yeast Infection?
Dog itchy and smelly skin, or an increase in your dog licking paws and groin, is due to itchiness and irritation from the INSIDE. A yeast infection in dogs can present as an inflammatory skin condition. While topical lotions and shampoos will help to treat sores and skin infections, in order to stop the need to lick and chew, you must control the itching and discomfort that is causing the problem in the first place.
What creates yeast overgrowth and a dog’s need to lick constantly? First and foremost, allergies — both food and environmental. Also, the type of food — too many carbohydrates, even in a "hypoallergenic" diet, can cause yeast overgrowth. The first step in any dog yeast infection treatment is to change your dog's diet. A dog with a yeast infection should be on a healthy hypoallergenic diet that is low in carbohydrates. Ask Ariel has helped clients achieve exceptional results with their dogs’ chronic yeast infections, so be sure to include what you are feeding your dog on the order form at checkout. We will review your pet's information and include a free diet suggestion on the packing slip that comes with your order.
K9 Yeast Defense Ingredients:
One capsule* contains:
*Dosage for pets varies by weight.
Caprylic Acid 125 mg
Grapefruit Seed Extract 35 mg
Echinacea Root (Echinacea angustifolia) 50 mg
Oregano 34 mg
Garlic Bulb Concentrate 35 mg
Pau d'Arco bark (Tabebula heptaphylla) 25 mg
Sodium Copper Chlorophyllin 12.5 mg
Selenium (as Selenium citrate) 10mcg
Zinc (as Zinc citrate) 5 mg
Enzyme Proprietary Blend 42 mg: (Protease, Phytase, alpha-Galactosidase, Glucoamylase, Pectinase, Peptidase, Cellulase, Hemicellulase)
Inactive Ingredients (capsule): cellulose, water.
Need Help?
Ask Ariel's pet supplements have been used successfully in veterinary hospitals since 2005 and are recommended by veterinarians nationwide. If you have questions regarding our dog yeast infection treatment or treating your dog’s itchy and smelly skin, please feel free to email us at Support@AskAriel.com. We will be happy to provide you with additional information about our natural supplements for yeast overgrowth, but please know that due to veterinary regulations we cannot provide individualized consultative advice without a physical exam.
K9 Yeast Defense provides the following benefits:
- Fights yeast overgrowth which can contribute to chronic ear infections, licking at the groin or genitals, chewing on armpits and paws, facial rubbing, itching and skin problems
- Supports overall immune health
- Helps restore proper balance of intestinal flora following antibiotic use
Wondering why your dog won't stop licking and licking? Dogs will often lick and chew on their paws because of a dog yeast infection on the paws. When they lick the paws, yeast grows, creating an odor and staining of the fur. The constant saliva on the skin can darken the skin and fur color, even turn the skin black. This creates a moist, yeasty area that can have a terrible odor.
K9 Yeast Defense is terrific for dogs that lick, have chronic ear infections, lick their genitals and have skin problems! Is your dog constantly licking at the groin and genital area? Is your dog licking its paws, scratching at the ears or itching and chewing at the armpits? Does your dog have an odor even after a bath? Doggie odor, a dog that constantly licks and ear infections can all be signs of yeast overgrowth.
Graydon
"Graydon developed a yeast overgrowth after a large allergic reaction to Mayfly bites. I’m not sure what the connection is. His belly, paws and anus became covered with yeast. He was super itchy and uncomfortable. I googled and found Ask Ariel. As a nutritionist, I was already quite knowledgeable about supplements and also quite wary. As soon as I read about all the products Ask Ariel had to offer, I knew I had the right place! I started Graydon on the recommended yeast protocol as well as a raw diet. It all worked. After about a year I eased him back to kibble and slowly came off all supplements except the probiotics. He remains yeast free only flaring up in May when the Mayflies are biting! Thanks so much to your team for such smart and clean products and for caring so much!" - Caroline, New York
Graydon uses the following products from Ask Ariel: Power Probiotic, AllerEaze, K9 Yeast Defense, and Olive Leaf Extract.
Willow
"This spring my 1 1/2 year old Siberian husky/Malamute mix Willow suddenly developed several “hot spots” of intense itching on her body. She ripped the hair out of 2 “hot spots” on her body and frantically itched other places. The vet said it could have been bug bites, allergies to her food, environmental or something unknown.
I looked at changing her to very expensive hypoallergenic food, steroid shots, special baths, etc. and none of that sounded like feasible (or healthy) solutions. I had noticed she smelled “yeasty” even though the vet discounted that. This site seemed to really know their stuff so I ordered K9 Yeast Defense and Power Probiotic right away. Willow did itch worse the first week, and then her itching was magically gone. She’s not sitting and panting anymore and she doesn’t itch now (other than normal dog itching). She also no longer smells. That smell went away now - and I have not given her a bath!
I am totally sold on this product. So grateful it’s out there! It is so easy to give to her and it works!" - Jessica, Montana
Finnick
"Finnick uses most of Ask Ariel's allergy and yeast products. We’ve been using Ask Ariel products for 10+ years... We love your products!" - Jenny, California
Sakura
"We just wanted to say THANK YOU. Our huskaroo was suffering from awkward odor, itching, stained fur, repetitive giardia that baffled our vet, and a terrible appetite. All at a very young age. We put her on the K9 Yeast Defense + Power Probiotic and 2 months later I am re-ordering ALL of it because she is a completely different dog. Not one case of giardia since the probiotic, no bad breath, no itching, and she eats! Every day! It's a miracle LOL. Anyway, wanted to let you know you improved the life of our husky." - Ciara
The Three Amigos - Molly, Ben & Kayla
"Right now all of our pets are doing really well. They're happy and full of energy with shiny coats which I totally attribute to your nutrition guidance - good foods and supplements. My dogs use several of your products: Kayla (Belgium shepherd) has a sensitive stomach so I give her K9 Digestive Enzymes and Power Probiotic. Ben (Golden retriever-10 yrs old) has a bad hip from an accident when he was a puppy so he takes ArthoSoothe and Curcumin Complex. Molly (Schnauzer-12 yrs old) has skin issues so she gets Power Probiotic and K9 Yeast Defense. Obviously, as you can see, we are very satisfied Ask Ariel customers!" - Oney Family, California
Dakota
"I want to let you know how great Dakota, our Golden Retriever that we rescued, is doing. When we got him, he had bad ear infections that he had for months, and his skin was so black in the armpit and groin areas that we thought it was ground in dirt. He also had acid reflux and would bring up bile several times a day. It has taken several months, but the blackened skin (from yeast) is almost back to normal thanks to K9 Yeast Defense. I wish we had taken “before” pictures of his skin because the difference is remarkable. And, for his acid reflux, we started using your supplements (Power Probiotic, K9 Digestive Enzymes, Gastro ULC and Soothing Digestive Relief). We used to give him Pepcid, but we have been able to slowly wean him off. I can’t forget to mention using your food recommendations. His ears didn’t start to clear up until we got him eating food that he could tolerate. Thank you so much for your supplements and all your help. Dakota is a much happier dog thanks to you!" - Pat & Tim, Pennsylvania
Sophia
"Our sweet Sophia is a 4 year old Shih Tzu and has suffered from a very sensitive tummy all of her life. We have used the Lypozyme and Power Probiotic along with the diet Ask Ariel recommended which has helped her so much. However, recently with allergy season, she had started chewing on her paws and scratching her ears a lot. I wanted to find a natural option as antihistamines don't help very much and make her so tired. We started Sophia on the K9 Yeast Defense and it helped so much. Just a little bit and she stopped scratching and chewing. We are so grateful for these wonderful Ask Ariel products that are keeping our baby healthy." - Gina, California
Prince Bleu
"Our 8 year old Siberian Husky Prince Bleu suffers from chronic yeast due to having digestive problems. He would always lick at his genitals and scratch at his ears. He has bad allergies and seemed really uncomfortable to the point where he would just lick and lick repeatedly. We gave him the K9 Yeast Defense and, within a few days, the licking and chewing stopped. K9 Yeast Defense stopped the genital licking completely." - Davis Family, California
Maestro
"Our sweet French Bulldog Maestro was scratching his face and tearing his fur out. He is very sensitive and we didn't want to keep giving him prescription medications. Benadryl would just knock him out and we wanted our doggie to feel better. We tried several diet changes and a few itch-relief products from other brands but nothing worked. Then, we found AskAriel. I am happy to report that after using the Amazing Omegas, K9 Digestive Enzymes, Power Probiotic, K9 Yeast Defense, AllerEaze and Quent, Maestro started to get better right away. He loves the Amazing Omegas on his food! A patch of fur that he kept chewing on is finally growing back. Thanks for the diet tips too. We are very happy we found Ask Ariel." - Amy, California
Denali
"At 16 years old, Denali is running, playing with our other dogs and still enjoys being the boss of the house. Denali has beat the odds and is our doggie miracle. She was rescued by Husky Haven of LA who saved her from death row at the shelter. Husky Haven saved her again when she found out her adopter gave her away (grr!) because she needed a life-saving surgery to remove a 4-pound tumor from her liver. Denali wasn't expected to survive that surgery 7 years ago, but she continues to thrive thanks to Ask Ariel's supplements. She uses Power Probiotic, K9 Yeast Defense and Olive Leaf Extract For Pets. The combination of the products helps to calm her tummy and control yeast. The recent addition of the Olive Leaf has really helped to control the "cheesy" odor and clear up some blackened skin." - Jason, California
Luna
"Luna started itching and scratching her body and genitals in the beginning of June. I put her on K9 Yeast Defense, Power Probiotic and Olive Leaf all of which she is still taking daily. My good news is that Luna's coat and skin are very healthy and in excellent condition." - Lynn, Florida
Chocolate Chips
"Just a bit of history, we got our Chorkie when she was about 9 weeks old. We truly believe she was the runt or just didn't get enough milk from her mother. She was not in good shape. She is 2 years old now. Since we got her until now she's had different health issues but the allergies have been the worst. We've spent thousands on vet visits, medications, natural treatments, etc. to no avail. Well, not until I found Ask Ariel while doing a Google search. I ordered some of the recommended supplements for allergies and gut issues. I have to say I was skeptical at first, but I am happy to report our Chorkie, Chocolate Chips, has improved significantly! I am so thankful that I found Ask Ariel." - Liza, Texas
Products Used: K9 Digestive Enzymes, ProAller, NOT Drops, K9 Yeast Defense and Power Probiotic.
Gavin
"Gavin is a 7-year-old Scottish Terrier who has been my buddy since a puppy. A couple of months before he turned 3, he became listless, had a high temperature, drinking more water than usual and no appetite to eat. He was hospitalized for 3 days at a Specialty Veterinary Hospital where tests were done to rule out various issues. To help him recover he was on a variety of pills. The specialty doctors still could not figure out what was wrong with him for a couple of months eventually concluding that he was diagnosed as having “Immune-Mediated Polyarthritis (IMPA)”. I wanted him off all the medication and researched for a more homeopathic way to heal. I decided on the website “Ask Ariel”. I have ordered various products eventually using up to 7 products on a regular basis going on 4 years. Gavin is doing very well!" - Lisa, California
Gavin uses Immune Harmony, Power Probiotic, AllerEaze, K9 Yeast Defense, NOT Drops and Amazing Omegas.
Tango
"The K9 Yeast Defense has worked miracles!!! Tango isn't licking at his genitals and his itching has improved so much." - Barber Family, California
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Product FAQs
Why does my dog constantly lick its paws?
Yeast overgrowth is more common in dogs with allergies. When allergies and yeast overgrowth are combined, they can cause doggie odor, constant licking at the paws and genital area, scooting and ear infections. K9 Yeast Defense is an all-natural herbal remedy that kills off the yeast overgrowth to help stop the itching and constant licking. One of the best dog licking paws remedies is a combination of K9 Yeast Defense and our AllerEaze supplement. K9 Yeast Defense works best when used in conjunction with AllerEaze to help relieve the allergic response.
Why does my dog smell yeasty?
Allergies, hormonal imbalances, fungi and parasites can lead to yeast overgrowth on your dog’s skin. This often results in an unpleasant cheesy smell. Topical sprays and shampoos may temporarily mask the odor, but the candida yeast needs to be treated from the inside out. K9 Yeast Defense, when used in conjunction with Power Probiotic and diet changes, will help rebalance your pet's intestinal flora. The addition of a powerful and effective probiotic helps to avoid the risk of your pet developing a bacterial infection while you are killing off the yeast.
Can coconut oil treat a yeast infection in dogs?
Caprylic acid is derived from coconut oil. It is a naturally occurring fatty acid that has been proven to be an effective antifungal compound that kills candida yeast. K9 Yeast Defense combines caprylic acid with pau d’arco and oregano oil to optimize its antifungal and immune-boosting properties. Pau d’arco and oregano are herbs that have been widely researched for their antimicrobial and antifungal properties.
How do dogs get yeast ear infections?
Ear infections are a common canine health problem, and they can be caused by allergies, yeast, ear mites or bacteria. Fungal yeast organisms are normally on the skin and in the ears. If the ear or ear canal becomes inflamed, the yeast can overgrow and create a distinctive blackish oozing discharge and a pungent odor. Your dog may also display head shaking, redness or excessive scratching of the ear. The combination of K9 Yeast Defense, Power Probiotic and NotaSAN is an excellent dog ear yeast infection home remedy to help prevent and control chronic ear infections and odor.
What causes a dog to get a yeast infection?
A healthy balance of good bacteria and other microorganisms in your dog's microbiome (the ecosystem of microorganisms in your dog's gut) is vital for your pet's health. The microorganisms in your dog's microbiome form a protective barrier in your dog's intestinal tract that can protect it from harmful invaders such as bad bacteria (e.g., E. coli), fungi (yeast) and viruses. Sugar (found in starchy carbohydrate dog foods and treats) feeds these pathogens, while antibiotics and steroids can kill off your dog's friendly bacteria, thus weakening your dog's immune system. This can set up an opportunity for yeast, bad bacteria and other pathogens to overgrow. When yeast overgrowth occurs, symptoms such as constant licking and scratching, smelly ears, hot spots and itchy paws occur. Yeast thrives in warm, moist environments and is most common in the armpits, groin and ears and between the toes. Skin yeast infections are generally caused by a high-carbohydrate diet, allergies or antibiotic use. All these factors can lead to your dog’s itchy and smelly skin. By using K9 Yeast Defense with Power Probiotic and the best diet for yeast infections, you can give your dog natural, effective relief from yeast infections.
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