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8 Best Milk Thistle Supplements for Dogs

Written by: Arlene Divina
Arlene Divina, one of the content writers at IHD, loves going on adventures with her adorable fur baby. She now creates informative content for pet parents. Read more
| Published on July 10, 2023
iHeartDogs is reader-supported. Some of the links below may be paid affiliate links, where we receive a small commission on a product at no additional cost to you. 

Welcome to our comprehensive guide on choosing the best milk thistle for your furry friend. As a pet owner, you strive to provide the best care possible for your dog, and this includes ensuring optimal liver health. Milk thistle, a herb renowned for its liver-boosting properties, can be an excellent addition to your dog’s dietary regimen. But with numerous options available in the market, selecting the best product can be daunting. This article will explore top-rated milk thistle supplements for dogs and provide insightful tips on what to look for to ensure you’re giving your pup the best care possible.


#1 – iHeartDogs Advanced Liver Supplement for Dogs – Dog Liver Support with Milk Thistle, Turmeric Curcumin, Cranberry & Dandelion Root Extract

The iHeartDogs Advanced Liver Supplement for Dogs is a chewable liver support supplement specifically designed to promote normal liver function in dogs. Made with all-natural ingredients such as milk thistle extract, turmeric curcumin, cranberry extract, dandelion root extract, and yellow dock root, this supplement aims to support the liver’s detoxifying process and overall health. It is also flavored with chicken, making it appealing to dogs. The recommended dosage depends on the size of the dog, with one to three chews suggested. Learn more about the iHeartDogs Milk Thistle supplement for dogs.


#2 – Herbsmith Milk Thistle Herbal Supplement for Dogs and Cats, 75g Powder

The Herbsmith Milk Thistle Herbal Supplement is a certified USDA organic powder made from pure milk thistle. It acts as a liver protectant and detoxifier for both cats and dogs, flushing out toxins from medication, antibiotics, free radicals, and heavy metals. Additionally, it may help with elevated liver enzymes, providing benefits beyond just detoxification. The supplement is made in the USA by a holistic veterinarian with over 30 years of experience.


#3 – Wonder Paws Milk Thistle for Dogs, Liver Support for Dogs, Supports Kidney Function for Pets, Detox, Hepatic Support, with Wild Alaskan Salmon Oil & Curcumin, Omega 3 EPA & DHA – 2 oz Pet Supplement

Wonder Paws Milk Thistle for Dogs is a pet supplement designed to support the kidney and liver health of dogs. It combines milk thistle extract with Wild Alaskan Salmon Oil and Curcumin C3 Complex to provide optimal benefits. The product contains safe and powerful ingredients such as EPA and DHA to support renal, immune, heart, brain, and liver function. It is made in the USA with globally sourced ingredients in a GMP Certified Facility and is intended for daily use for dogs of all sizes.


#4 – Pet Wellbeing Milk Thistle for Dogs – Supports Liver Health, Protects Liver – Glycerin-Based Natural Herbal Supplement – 2 oz (59 ml)

Pet Wellbeing Milk Thistle for Dogs is a glycerin-based herbal supplement that supports liver health in dogs. It helps protect the liver from toxins and oxidative damage, supports detoxification, and assists in the regeneration of healthy liver cells. Developed by in-house holistic veterinarians and made in the USA, this product is formulated with high-quality ingredients and comes with a money-back guarantee.


#5 – Wanderfound Pets Milk Thistle for Dogs – Tasty Salmon & Bacon Flavored Natural Liver Support for Pets – Kidney Cleanse Detox & Repair Formula Manufactured in The USA – 100 Chewable Tablets

Wanderfound Pets Milk Thistle for Dogs is a liver support supplement designed to improve and optimize liver function in dogs. It contains natural ingredients like Milk Thistle, Artichoke, Yellow Dock, and Dandelion to promote the health of vital organs. With a delicious salmon and bacon flavor, these chewable tablets are suitable for all dog breeds and sizes. The product is manufactured in the USA and comes in a convenient 100-tablet package.


#6 – Milk Thistle for Dogs – 120 Chewable Tablets – Liver and Kidney Support for Dogs – Hepatic Support with EPA & DHA – Detox for Dogs – Dog Liver Support – Liver Supplement for Dogs

The Milk Thistle for Dogs – 120 Chewable Tablets is a liver and kidney support supplement for dogs. It contains organic milk thistle, which acts as a natural detox and helps eliminate toxins in the liver. The supplement also promotes overall liver and kidney health and includes essential fatty acids for heart, skin, and coat health. Manufactured in FDA-registered facilities in the USA, the supplement is veterinarian approved and hypoallergenic.


#7 – K9 Select Milk Thistle for Dogs, 100mg – 60 Beef Flavored Tablets – Canine Liver Health Supplement

K9 Select Milk Thistle for Dogs is a liver health supplement designed to promote detox and remove waste substances from the blood in dogs. It is made using pure Milk Thistle extract and provides antioxidants naturally, helping to maintain liver and kidney functions. Each tablet contains 100mg of milk thistle, standardized to 80% silymarin, and has a beef flavor that dogs find enjoyable to chew. This supplement is advised by veterinarians and can be beneficial for dogs with elevated liver enzymes or stressed livers.


#8 – Milk Thistle for Dogs Liver Detox Support (120 GMS), Canine and Cat Liver Support Supplement Powder Without Capsules, Pills

Milk Thistle for Dogs Liver Detox Support is a natural supplement powder designed to support liver health in dogs and cats. It is made with milk thistle, which is well-known for its detoxifying properties. The powder can be easily mixed with pet food and should be used three times a day. It is believed to support the liver, pancreas, and gallbladder in pets and may also be beneficial for animals with inflammatory bowel disease.


What Are The Benefits of Milk Thistle for a Dog?

Milk thistle, a natural herb, is renowned for its liver-protective properties and is commonly used as a complementary therapy in both humans and dogs. The key benefits of milk thistle for dogs are primarily related to liver health:

  1. Liver Detoxification: The main active ingredient in milk thistle is silymarin, which has been shown to help the liver detoxify harmful substances. This is especially beneficial for dogs who have been exposed to toxins or are on long-term medication.
  2. Liver Regeneration: Silymarin aids in the regeneration of liver cells, which is crucial for dogs with liver disease or damage. It stimulates protein synthesis, helping to repair liver cells and restore liver function.
  3. Antioxidant Properties: Silymarin is a potent antioxidant that helps neutralize harmful free radicals, which can cause cellular damage. This protection can help prevent diseases associated with oxidative stress.
  4. Anti-inflammatory Effects: Milk thistle also exhibits anti-inflammatory effects, which can be beneficial for dogs with liver inflammation.
  5. Gallbladder Support: Milk thistle can stimulate the production of bile, which is vital for digestion and absorption of fats. This can support overall digestive health in dogs.

Remember, while milk thistle can provide substantial benefits for a dog’s liver and overall health, it’s important to consult with your vet before starting any new supplement regimen. Every dog is unique, and what works well for one dog may not be suitable for another.


Frequently Asked Questions About Milk Thistle for Dogs

  1. What is milk thistle and how does it benefit dogs? Milk thistle is a flowering plant that contains the active ingredient silymarin, which is known for its liver-protective properties. It aids in detoxifying harmful substances, regenerating liver cells, combating oxidative stress with its antioxidant properties, and reducing inflammation in the liver.
  2. Is milk thistle safe for dogs? Generally, milk thistle is considered safe for dogs. However, like any supplement, it can cause side effects, such as gastrointestinal upset or allergic reactions. It’s crucial to consult your vet before starting your dog on any new supplement, including milk thistle.
  3. How should milk thistle be administered to dogs? Milk thistle can be given to dogs orally, typically in the form of a capsule, tablet, or liquid extract. The dosage depends on the dog’s weight and the specific product’s recommendations.
  4. Can milk thistle cure liver disease in dogs? While milk thistle can support liver health and may slow the progression of liver disease, it’s not a cure. It’s most effective when used as a part of an overall treatment plan under a vet’s guidance.
  5. Can I give my dog milk thistle if they’re on other medications? While milk thistle is generally safe, it can interact with certain medications. Always consult your vet before introducing new supplements to your dog’s regimen.
  6. Are there any side effects of milk thistle in dogs? Potential side effects of milk thistle in dogs are generally mild and can include gastrointestinal upset like diarrhea, gas, or loss of appetite. If your dog experiences any adverse reactions, contact your vet immediately.
  7. Does milk thistle help dogs with more than just liver issues? Yes, besides supporting liver health, milk thistle’s antioxidant properties may benefit overall cellular health. However, its primary use and most substantial benefit relate to liver function.
  8. How long does it take for milk thistle to work in dogs? The timeframe varies depending on the dog’s health status and the condition being managed. Some improvements might be noticed in a few weeks, while others may take several months.
  9. Can puppies take milk thistle? Milk thistle is generally safe for dogs of all ages, but the dosage should be adjusted according to size and weight. Consult your vet before giving milk thistle or any supplement to a puppy.
  10. Can I give my dog milk thistle daily? Yes, you can give your dog milk thistle daily, but it’s essential to follow the dosage recommended by your vet or the product manufacturer. Chronic overdosing could potentially lead to adverse effects.


Conclusion: Best Milk Thistle for Dogs

Selecting the best milk thistle supplement for your dog does not have to be an overwhelming process. By keeping in mind the factors we have discussed, such as the quality of ingredients, the concentration of silymarin, the form of the supplement, and the recommendations of your vet, you can find a product that supports your dog’s liver health effectively. Remember, every dog is unique, and what works best for one might not necessarily be the best for another. Always observe your dog’s reactions to the supplement and consult with your vet if you have any concerns. Here’s to a healthy and happy life for your canine companion!

iHeartDogs is reader supported. Some of the links below may be paid affiliate links, where we receive a small commission on a product at no additional cost to you. 

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