Proof does not make a product for horses. We make a 300mg THC-free tincture for dogs and cats. Nothing on this page is selling you anything, and there are no product links on it.
A pet tincture is the wrong tool for a horse, and it is not close. A 300mg bottle for a dog is a 300mg bottle. A horse weighs somewhere around 500 kilograms. The arithmetic does not work, and a brand telling you it does is either not doing the arithmetic or hoping you will not.
If your horse competes, cannabinoids are prohibited. This is the single most important thing on this page and most CBD marketing does not mention it.
The competition rules, which nobody tells you
Under USEF rules, cannabinoids are prohibited. US Equestrian has treated a positive cannabinoid test as a violation since 1 September 2019, and that includes CBD, not only THC. A positive test is a rule violation with the consequences that follow.
Under FEI rules, CBD and CBDA appear on the 2026 Prohibited Substances List as Controlled Medication. That is a different category from doping, but it is still a substance that must not be present in competition.
What this means practically. If your horse competes under either body, you cannot give it CBD and compete. Not “with a withdrawal period,” not “at a low amount,” not “as a supplement rather than a medication.” The rules do not distinguish on those grounds.
Check with your competition's governing body about current CBD and cannabinoid rules before using any hemp product on a competition animal.
→Read nextThe full breakdown of USEF and FEI rules
This applies to more owners than they realise. Many people who would not describe themselves as competitors compete: local shows, affiliated classes, anything running under a governing body’s rules. If you are unsure whether your rules apply, ask your governing body directly rather than assuming.
Why the strength question is not a detail
A dog tincture is built to deliver a useful amount to an animal weighing perhaps five to forty kilograms.
A horse is an order of magnitude larger again. Whatever the appropriate amount for a horse might be, it is not a fraction of a bottle designed for a spaniel, and buying multiple pet bottles is not a sensible route either, on cost or on practicality.
Equine products exist, sold at strengths and volumes built for the species. This page is not endorsing any of them, and it is not in a position to, but it is worth knowing that scaling up from a pet product is not the approach.
→Read nextCBD dosage for horses, and why the maths does not carry over
What the evidence shows
Limited. Interest is high and published work in horses is considerably thinner than in dogs.
There is a structural reason for that on top of the usual ones: the competition rules constrain use, which constrains the population available to study, which constrains the research.
That means an owner considering this is working with less information than a dog owner, and considerably less than the marketing suggests.
→Read nextWhat the research actually shows
What horse owners are usually trying to solve
Each has its own page, and each has a better first answer than a supplement.
Stiffness and comfort in an older horse. The largest non-competition use case, and a genuine veterinary conversation first.
→Read nextOlder horses and joint stiffness
Anxiety, trailering, cross-tying and stall vices. Where management and training do more than anything in a bottle.
→Read nextHorse anxiety and trailering
Donkeys and mules are not small horses
Worth flagging on this page because it catches people out.
Donkeys metabolise a number of drugs differently from horses, and dosing a donkey by extrapolating from horse guidance is a recognised way to get it wrong. This applies well beyond CBD and it is not widely known among owners.
→Read nextCBD for donkeys, mules and ponies
What to ask your vet
- “Does my horse compete under any rules that prohibit this?” Ask first, because it may end the conversation.
- “Given what my horse is on, is there an interaction concern?”
- “Is there a legitimate equine product, and what would you look for in one?”
- “Is there something that would do more for what I am actually worried about?” Usually there is.
Testing and labelling still apply
If you go ahead with an equine product, the same verification applies as anywhere else: a third-party certificate covering potency, THC and contaminants, available for the product you are buying.
For a competing horse, THC-free is not sufficient, because CBD itself is the prohibited substance under USEF rules. That is a different problem from the one a certificate solves.
→Read nextHow to read a lab report
The short version
The short version
- Proof makes no equine product and this page sells nothing.
- Under USEF rules cannabinoids including CBD are prohibited. FEI lists CBD and CBDA as Controlled Medication for 2026.
- If your horse competes, that is the end of the question, and THC-free does not solve it.
- A pet tincture is the wrong tool at 500kg. Do not scale up from a dog bottle.
- The published evidence in horses is limited, partly because the rules constrain the research.
- Donkeys are not small horses and should not be dosed as though they were.