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Milk Thistle for Dogs

Support for liver and kidney detox and cancer support in dogs

USD $45.95
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Does Your Dog Have Elevated Liver Enzymes? Join the NHV Milk Thistle Clinical Study

Clinical Trials & Research 4 min read



Application deadline for the NHV Milk Thistle Clinical Study: September 30th, 2026. Find the sign-up form below.

At NHV, we invest heavily in the research of our supplements as a part of our commitment to pet wellness. We have already researched many of our supplements, including NHV Tripsy, Natures Immuno, and NHV Resp-Aid. Now, we are holding an open call for pet parents who want to be a part of our next study: the NHV Milk Thistle Clinical Study.

If your dog has elevated liver enzymes, consider joining our study. Your participation could help advance scientific understanding of natural pet supplements and contribute to better-informed wellness support for pets in the future.

Additionally, as a thank-you for participating, those chosen for this study will receive 1 NHV Milk Thistle supplement and an additional $100 credit toward future NHV purchases (valid for 1 year).

What Is NHV Milk Thistle?

NHV Milk Thistle is a natural supplement for pets made with a full-spectrum extract of organic milk thistle seed. It helps support healthy liver function, assists the liver’s natural detoxification processes, and helps support the healthy maintenance of normal liver enzyme levels. It may be especially helpful for pets whose livers need additional support due to medications, environmental toxins, aging, or ongoing health concerns.

NHV Milk Thistle is authorized by Health Canada’s Veterinary Drugs Directorate as a Veterinary Health Product and can be found under notification number NN.1W8.

Why Is NHV Conducting This Study?

Since its founding, NHV has been committed to creating high-quality pet supplements using natural ingredients, while empowering pet parents around the world with trusted education and guidance. NHV also continues to support the advancement of holistic pet care through veterinary expertise and scientific research.

As part of this commitment, NHV invests significantly in advancing the science behind our supplements through research partnerships with several accredited and internationally recognized universities, including the University of Georgia, the University of Saskatchewan, the University of Calgary, Massey University in New Zealand, and others. NHV has conducted animal research evaluating several of its formulations, including Tripsy for urinary health, Resp-Aid for respiratory health, and Nature’s Immuno for supporting a healthy inflammatory response. Findings from this research have been published in peer-reviewed scientific journals, including the Journal of Immunology, and presented at respected veterinary and scientific conferences.

Through this study on NHV Milk Thistle, we seek to expand the scientific evidence supporting its use in dogs with elevated liver enzymes. The data we collect may help pet parents and veterinarians understand when and how to use NHV Milk Thistle to support a dog’s liver.

Who Can Participate?

Applications are open for participants in the US or Canada.

Please reach out to us by email (provided in the How to Join section below) if your dog meets the following criteria:

  • Has recent bloodwork showing elevated liver enzymes (within the last 30 days)
  • Is currently under the care of a licensed veterinarian
  • Can receive NHV Milk Thistle for 30 days as instructed
  • Be able to complete follow-up bloodwork at the end of the 30-day study period. NHV may be able to cover the cost of liver enzyme testing by working directly with your licensed veterinary clinic

If you are interested, please fill out the form below, and more information will be sent to you.


What Does Participation Involve?

Participating in the NHV Milk Thistle Clinical Study is simple and can be completed entirely from the comfort of home, with no travel required other than your dog’s blood test at the end of the study.

To get started, participants sign up using the sign-up form. You will then receive an email asking you to provide your fur kid’s initial medical records and bloodwork showing elevated liver enzyme values, along with a short questionnaire and consent form.

Our Research Team will review the information and confirm whether your pet is eligible to participate. If your pet is not eligible, we will let you know by email. Please note that only confirmed study participants will be eligible to receive free NHV Milk Thistle, a $100 NHV store credit, and potential coverage for follow-up liver enzyme testing arranged directly with their licensed veterinary clinic.

Over the next 30 days, you will administer NHV Milk Thistle as directed while keeping our study team updated on any changes in your pet’s health or medications. Finally, you will complete follow-up bloodwork and a brief final questionnaire after the 30-day period so our research team can evaluate the results.

How will NHV Support You During the Study?

NHV will provide approved participants with:

  • 1 free NHV Milk Thistle to be used during the study
  • Coverage of follow-up bloodwork completed after the 30-day study period may be available.* Coverage is subject to certain conditions, including NHV working directly with your veterinary clinic for invoicing and payment, and applies only to the liver enzyme testing required for the study. Complete terms and conditions will be provided to confirmed participants.
  • Ongoing support from the NHV Scientific & Medical Affairs team

Please note that support from our team cannot replace regular veterinarian care, and all participants must have access to their veterinarian.

As a thank-you, approved participants will receive a $100 voucher for future NHV purchases. 

Our Commitment to Safety and Privacy

The study is conducted with a strict commitment to your pet’s welfare. Participation is voluntary, and pet parents have the right to withdraw at any time. Pet parents will get transparent information about the study before providing informed consent.

We respect the trust you place in us, which extends to your personal information. All of the veterinary data and your personal details shared during the study are kept strictly confidential and used solely for research purposes.

How to Join the NHV Milk Thistle Clinical Study

If you are interested in joining the study and want to see if your dog qualifies, we invite you to reach out to fill out this form:


The deadline to apply is September 30th, 2026. Thank you for your interest in joining the next NHV study, and we hope to hear from you soon.

NHV Pet Experts

NHV Pet Experts

We have a dedicated group of pet expert professionals, including veterinarians, vet techs, and other pet professionals to guide you through any questions. We’re committed to your pet’s wellness and can offer additional tips, resources, nutritional advice, and more.

Published: August 5, 2026

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