Brewers Yeast For Fleas

Brewers yeast for flea treatment is an effective and inexpensive home remedy that helps to eliminate and prevent the flea population in your household. What is brewers yeast and how does it work? Incidentally, this remedy is ideal for those who wish to supplement their dog’s diet or for those who do not want to give their pet supplements or additives. Brewers yeast for fleas It’s not a new product, but it has always been a great one. It’s been used for years as an alternative to flea control products on the market. Brewers’ yeast for fleas is made from a variety of brewers’ yeast. This will prevent not just your pets from getting fleas, but even indoor areas too.

Brewers yeast is the best flea treatment for dogs and cats. It’s also a good choice for killing ticks and mosquitoes, so you may want to try using it as a general insecticide. The active ingredient in brewers yeast is known as “brewer’s yeast powder”, which is made from dried yeast cells that are grown on molasses and then combined with other ingredients. This can kill fleas because it contains high amounts of protein and B vitamins.

However, it should not be used on cats or dogs under four months old because they may develop anemia due to the high level of vitamin B12 in this product. Brewers yeast works by killing adult fleas on your pet’s skin within 24 hours after application or ingestion by your pet; however, it does not have any effect on larvae or pupae stages of fleas (which are more resistant).

How Brewer’s Yeast Works To Prevent Fleas

Brewer’s yeast is a great way to help prevent fleas from infesting your dog, cat, and even you.

Flea bites are itchy and can cause a rash on your pet, but they can also make humans sick. If you have a pet that is bitten by fleas, you may have noticed that you have a rash or that your arm feels itchy. That’s because flea saliva contains proteins that are harmful to humans as well as animals.

The best way to prevent this reaction is by using brewer’s yeast as a flea deterrent in your home and yard. Brewer’s yeast contains B vitamins and amino acids that are essential for a healthy diet, but they also repel fleas when sprinkled over your pets’ fur.

Brewers Yeast For Fleas’ Recipe

This recipe consists of only 3 ingredients. Each item works together to create a natural flea treatment for your dog. Two out of the three contain amazing healthy qualities, whereas the final ingredient adds a punch in fighting fleas.

Independently, brewer’s yeast is extremely beneficial for dogs. It’s high in antioxidants and many vitamin B’s. Brewer’s yeast also promotes healthy skin, eyes, fur, and liver function. Due to the high levels of vitamin B, it is stated that brewer’s yeast could very well help reduce anxiety levels in dogs and cats.

Brewer’s yeast in combination with garlic works extremely well in repelling fleas. Especially when it is offered daily. Fleas do not like the ‘flavor’ of dogs that have consumed homemade brewer’s yeast cubes.

homemade brewer's yeast cubes

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Stay up to date and do not miss the pointers needed to create and live a sustainable life in a modern world. A small warning, because of the dosage amount brewer’s yeast can cause large dogs to become gassy. Also, it can counteract many medications, including prescriptions for anxiety and depression. It is best to contact your veterinarian if your dog is taking medications prior to beginning a natural flea treatment that contains brewer’s yeast.


Coconut oil is the binding element for this natural flea treatment. Due to its amazing benefits coconut oil can also be offered in addition to this recipe. When offered daily, coconut oil helps with skin issues, digestion, and bone health. It also aids in weight loss, soothes joint and arthritis issues, and provides energy. Coconut oil is a powerful antibacterial, antiviral, and anti-fungal agent which assists in preventing many infections and diseases from occurring.


Garlic is a very controversial item when it comes to offering it to dogs. Yes, garlic can cause death though it must be consumed in high quantities in order to do so. For example, a dog must consume half of its body weight of garlic in order for it to become toxic.

With that said, I have never seen either of our pups show interest in consuming garlic, either fresh or cured. Nor have I ever seen our dogs show interest in consuming garlic bulbs found in the garden.

But that’s our dogs, your pups may be different. If offering garlic is not comfortable for you, simply leave it out of the recipe.

With that said, remember, garlic can safely be offered to dogs in a small amount daily. A large dog can consume 1 small clove, whereas a smaller toy breed should consume a quarter of a small clove.


  • 1 1/8-cup organic coconut oil, melted
  • 1/2 cup of brewer’s yeast, or brewer’s yeast with garlic
  • 5 large cloves minced fresh garlic, optional when using plain brewer’s yeast
natural flea treatment


  • 3 silicone molds, 1/4-ounce cubes
  • silicone spatula, or condiment dispenser


  1. Melt the coconut oil.
  2. Add the brewer’s yeast and minced garlic to the melted coconut oil. Mix by hand using a spatula, whisk, or immersion blender until thoroughly blended.
  3. Slowly pour the mixed brewer’s yeast and coconut oil concoction into the silicon mold. Spread into the sections using a rubber spatula. Or add the mixture to the condiment dispenser and gently distribute evenly to each section of the mold.
  4. Place the silicone molds into the freezer until the homemade brewer’s yeast cubes have frozen. This process will take roughly 5 minutes.
  5. Once frozen, pop the homemade brewer’s yeast cubes from the molds and place them into a Mason jar or freezer-safe container. Store the cubes in the freezer.
  6. Offer this natural flea treatment daily base on the weight of the dog.
homemade brewer's yeast cubes


Offer 1/4 teaspoon (1 heart or cube) for every 10 pounds. Use the natural flea treatment as a treat or add to their food daily, make sure to not exceed the amount suggested.


In addition to offering this homemade brewer’s yeast cube recipe consider incorporating the following natural items. Together these items will help to reduce the flea overload on your dog.

A quick note, in order to fight fleas naturally you must be diligent and consistent with treatment daily.

Apple Cider Vinegar – Add 2 teaspoons of raw apple cider vinegar for every 50 pounds to your dog’s waterer or food. The ACV alters the smell and taste of a dog, which works to repel fleas.

Diatomaceous Earth (DE) – DE is made up of tiny fossilized plankton. Once has been ground to powder sharp shards form. These shards are deadly to soft skeletal bugs such as fleas.

List of Brewers Yeast For Fleas

Brewers yeast is a dietary supplement that can be used to manage fleas. It is an effective way to get rid of these pesky pests and their eggs, even if you have a large number of them. In addition to being safe and non-toxic for your pet, brewer’s yeast has been shown to be effective in controlling fleas in cats, dogs, and other house pets.

Nutri-Vet Brewer

Nutri-Vet Brewer’s Yeast and Garlic Chewable Tablets for Dogs | Veterinarian Formulated to Support the Immune System and a Healthy Skin & Coat | 500 Chewable Tablets

Price :

Features :

  • GREAT TASTE – These tasty, easily palatable chewable are veterinary formulated with antioxidants.
  • HEALTHY SKIN & COAT – Excellent source of protein and B vitamins that can help maintain healthy skin and coat.
  • VETERINARIAN FORMULATED – Zinc, copper, and manganese supports the immune system.
  • EVERYDAY USE – Completely safe for everyday use.
  • MADE IN USA with globally sourced ingredients – Made in the USA with premium ingredients you can trust. All Nutri-Vet supplements carry the National Animal Supplement Council (NASC) quality seal.

Additional Info :

Item Dimensions 
Height6 Inches
Width3.5 Inches
Length3 Inches
Weight0.75 Pounds

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Nutri-Vet Brewers Yeast with Garlic Chewables, 1000 Count

Nutri-Vet Brewers Yeast with Garlic Chewables, 1000 Count

Price: $22.90 ($0.02 / Count)

Features :

  • Supports skin and coat health
  • Contains B vitamins, minerals, and antioxidants
  • Great liver flavor
  • Garlic may assist as a flea deterrent
  • 500 Count

Additional Info :

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Only Natural Pet Brewer

Only Natural Pet Brewer’s Yeast & Garlic – Safety Sealed 2 Pack

Price: $27.99

Features :

Additional Info :

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Only Natural Pet Brewer

Only Natural Pet Brewer’s Yeast & Garlic Tablets – Flea Pills for Dogs & Cats – 300 Turkey Flavored Chewable Tablets

Price: $14.99

Features :

  • FLEA PILLS FOR DOGS – Made with the time-proven combination of brewer’s yeast & garlic, these chewable tablets create an unnoticeable odor that’s unpleasant for fleas & biting insects. Plus, they support healthy skin & coats, telling fleas to steer clear.
  • BREWER’S YEAST NATURAL SUPPLEMENT FOR DOGS – Brewer’s yeast combines with garlic, b-vitamins, folic acid, and vitamins & minerals to support your dog or cat’s overall health, wellness, immune system, and skin & coat.
  • HOLISTICALLY FORMULATED & SAFE FOR DOGS – Holistically formulated by our veterinarian Dr. Jean Hofve, the garlic found in these tablets is included at levels known to be safe & beneficial for our animal companions. Garlic would need to be ingested at extremely high levels for an extended period to have a detrimental effect on a companion animal’s health.
  • MADE IN THE USA – In an FDA-approved facility using the highest quality ingredients available. This easy-to-use chewable tablet has a delicious natural turkey flavor that dogs & cats both find irresistible.
  • SATISFACTION GUARANTEE – Only Natural Pet products always include a 100% Satisfaction Guarantee. Only Natural Pet offers only the highest quality natural flea & tick products. Providing you & your pet with the highest quality products is our top priority.

Additional Info :

Item Dimensions 
Height1.5 Inches
Width2.4 Inches
Length4.3 Inches
Weight0.28 Pounds

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NaturVet – Brewer’s Dried Yeast Formula with Garlic Flavoring – Plus Vitamins – Supports Healthy Skin & Glossy Coat –Fortified with B-1, B-2, Niacin & Vitamin C –for Dogs & Cats (500 Tablets)

NaturVet – Brewer’s Dried Yeast Formula with Garlic Flavoring – Plus Vitamins – Supports Healthy Skin & Glossy Coat –Fortified with B-1, B-2, Niacin & Vitamin C –for Dogs & Cats (500 Tablets)

Price: $15.99

Features :

  • Brewer’s Dried Yeast Formula Plus Vitamins are an excellent source of B-complex vitamins.
  • Contains essential fatty acids to help support glossy coats and healthy skin.
  • Veterinarian formulated with B-1, B-2, Niacin, and Vitamin C.
  • Easy to administer chewable tablets crafted with a garlic flavor your dog or cat will love. For use in dogs and cats over the age of 12 weeks.
  • NASC, cGMP Compliant, Manufactured in the USA

Additional Info :

Item Dimensions 
Height2 Inches
Width2 Inches
Length4 Inches
Weight0.55 Pounds

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In Conclusion,

Brewers yeast for fleas is a great way to get rid of fleas in your home. The best part about brewer’s yeast is that it does not contain any harmful chemicals, so you can use it without worrying about harming your dog or cat.

Brewer’s yeast is also good for killing off other insects in your home, including ants and cockroaches, as well as mites that may be bothering your pets. The yeast will work its way through the entire house by attracting all kinds of bugs to it, and then they will die when they eat it. This makes brewer’s yeast a great way to get rid of any pests inside your home without having to worry about using harmful chemicals that could harm your pets or children.

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