Why are horse owners using CBD for their horses?

Horse owners use CBD as a gentle, non-intoxicating way to support their horse’s nervous system, help with trailering stress and vet-visit nerves, reduce chronic joint discomfort, and promote overall calmness and comfort.

How much CBD should I give my horse?

Most evidence-informed equine CBD dosing falls roughly between 0.1 and 3 mg/kg per day, with 0.5–1.5 mg/kg per day being the most commonly used practical range. Conservative starting doses for general wellness often sit around 0.1–0.3 mg/kg, while more significant anxiety or chronic issues may require higher ranges under veterinary guidance.

Where do equine CBD dosage guidelines come from?

Equine CBD dosage guidelines are based on pharmacokinetic and safety studies in horses, veterinary trials and case reports, expert review articles, industry-wide dosing patterns from equine CBD brands, and real-world feedback from barns, trainers, and equine practitioners.

What are the evidence-informed CBD dosage ranges for horses in 2025?

As of 2025, practical ranges synthesized from research and field use are: 0.1–0.3 mg/kg per day for general wellness and mild support, 0.3–0.8 mg/kg per day for moderate anxiety, tension, or discomfort, 0.8–1.5 mg/kg per day for more chronic issues, and 1–3 mg/kg per day in upper research ranges under veterinary supervision.

How do I calculate the correct CBD dose for my horse?

First convert your horse’s weight from pounds to kilograms by dividing by 2.2. Then multiply weight in kilograms by your chosen mg/kg dose to get the total milligrams of CBD per day. Finally, divide the required milligrams by the mg/mL strength of your CBD oil to determine how many milliliters to give per day.

How often should I give CBD to my horse?

Many equine pharmacokinetic studies used once-daily dosing, but in practical use wellness and joint support are often dosed once or twice daily, while anxiety and behavior support may respond best to twice-daily dosing for steadier levels. For events such as trailering, a dose is typically given 1–2 hours before, sometimes along with a small dose the night before.

Is CBD safe for horses?

Current research suggests that CBD has a favorable safety profile in horses. Short- and medium-term dosing up to around 1–3 mg/kg per day has been found to be well tolerated, and chronic 1 mg/kg per day dosing showed no significant adverse clinical effects in published studies, especially when monitored by a veterinarian.

What side effects can CBD cause in horses?

Potential side effects may include mild sedation at higher doses, soft stool or mild gastrointestinal upset, changes in thirst or appetite, and possible changes in liver enzymes. If you notice concerning changes, reduce the dose or pause CBD and consult your veterinarian.

Is there a maximum safe CBD dose for horses?

Equine pharmacokinetic and safety studies have used doses up to 3 mg/kg per day, and in some CBD or CBDA combinations even higher, without serious adverse effects over several weeks. However, conservative guidance is to stay within 0.1–1.0 mg/kg per day unless there is a strong reason and veterinary support, and only approach 1.0–1.5 mg/kg or more under close veterinary supervision.

Can CBD cause my horse to fail a drug test?

Yes. Most major equine competition bodies, including FEI, USEF, and many ARCI jurisdictions, treat cannabinoids as prohibited substances. CBD can remain detectable in blood or synovial fluid for days or longer, especially with higher doses or chronic use, so you should always check current rules and plan long withdrawal times if your horse competes.

How do I choose a CBD product that makes dosing easy?

To make dosing easier and more accurate, choose a CBD product with clearly labeled milligrams of CBD per milliliter, an equine-appropriate concentration such as 50–100 mg/mL, full-spectrum or broad-spectrum hemp extract, third-party lab tests for each batch, and a consistent carrier oil such as MCT. This allows you to calculate and adjust your horse’s dose precisely over time.

CBD for Horses: Safety, Research & Why Dosing Requires a Veterinarian

Dec 10, 2025

2 min read

Updated: Oct 10

CBD for horses: safety, research and why dosing requires a veterinarian

There is no FDA-approved CBD product or dosing standard for horses. Published equine studies have mostly examined how specific CBD formulations are absorbed and tolerated under controlled conditions. Those studies do not establish that a retail product treats anxiety, pain, inflammation or another condition.

Why study doses are not instructions

A milligram-per-kilogram amount used in a research protocol is not a general recommendation. Study products, purity, timing, monitoring and animal selection differ from retail use. A horse’s diagnosis, age, body condition, liver health, medications, competition status and intended use can all change the risk.

Start with an equine veterinarian

Changes in movement, behavior, appetite, performance or recovery can have causes that need diagnosis. Delaying veterinary evaluation while trying an unapproved product may postpone effective care. Ask the veterinarian whether CBD is appropriate at all and whether laboratory monitoring or medication changes would be needed.

Food-supply considerations

The FDA has warned about CBD products intended for food-producing animals. The agency has not established safe residue levels or a withdrawal period for meat, milk or other animal-derived food. A veterinarian should address food-chain status before any exposure.

Competition and testing

Equestrian organizations set their own prohibited-substance and withdrawal rules. Full-spectrum products can contain THC, and inaccurate labeling or cross-contamination can create additional testing risk. Confirm current rules with the relevant governing body and veterinarian before a competition horse receives any cannabinoid product.

Product-quality questions

• Does a recent, batch-specific certificate of analysis match the lot number?

• Does it report actual CBD and THC content and contaminant testing?

• Are the carrier oil, flavorings and other ingredients appropriate for horses?

• Does the company avoid disease-treatment and guaranteed-performance claims?

• Is there a clear contact and adverse-event reporting process?

Possible adverse effects and interactions

Research does not establish long-term safety for every horse or formulation. CBD may interact with medications, and products may contain unexpected THC or contaminants. Stop use and contact a veterinarian if a horse develops concerning behavior, appetite, coordination, digestive or performance changes.

Bottom line

There is no universal online calculator or evidence-based retail dose for horses. Equine CBD should be treated as a veterinary decision involving the exact horse, product and use case—not as a do-it-yourself dosage chart.

Sources

U.S. Food and Drug Administration: Regulation of Cannabis and Cannabis-Derived Products, Including CBD — https://www.fda.gov/news-events/public-health-focus/fda-regulation-cannabis-and-cannabis-derived-products-including-cannabidiol-cbd

U.S. Food and Drug Administration: Warning on CBD Products Intended for Food-Producing Animals — https://www.fda.gov/animal-veterinary/cvm-updates/fda-warns-four-companies-illegally-selling-cbd-products-intended-use-food-producing-animals

U.S. Food and Drug Administration scientific memorandum on CBD in animal food — https://www.fda.gov/media/169549/download

This article is educational and is not veterinary advice. Cannagea products are not intended to diagnose, treat, cure or prevent disease.

CBD for Horses: Safety, Research & Why Dosing Requires a Veterinarian

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