Guide 20 → Alternative Therapies for Pet Epilepsy: The Evidence
Alternative and adjunct therapies — diet, supplements, and what the evidence shows
From CBD oil to acupuncture — what pet owners are exploring alongside conventional treatment, and what the veterinary evidence currently supports.
Research in veterinary epilepsy is evolving, and evidence quality varies significantly between therapies. This guide summarizes the current state of the evidence — including where it is promising but still limited. None of the therapies discussed here have been approved as veterinary epilepsy treatments, and none should replace anti-seizure medication prescribed by your veterinarian.
What you need to know
When seizures are difficult to control — or when owners are looking to support their pet alongside conventional medication — alternative and adjunct therapies are frequently explored. This guide reviews the current evidence in plain language. Some approaches have meaningful clinical trial data; others have biological plausibility but limited direct evidence. None replace anti-seizure medication, and none should be started without discussing them with your veterinarian first.
CBD (cannabidiol)
CBD is among the most frequently discussed adjunct options in veterinary epilepsy, and it is one of the few areas where controlled veterinary trial data exists. A randomized controlled trial from Colorado State University (McGrath et al., 2019) found a statistically significant reduction in seizure frequency in CBD-treated dogs compared to placebo. However, the study involved small numbers, individual responses varied considerably, and not all dogs responded. Some studies suggest seizure reduction in subsets of dogs, but evidence remains limited and responses vary.
No CBD product is currently approved by the FDA as a veterinary epilepsy treatment.
- THC is toxic to dogs. Never give any product containing THC. Use only pure CBD products with a third-party certificate of analysis confirming THC content.
- Liver monitoring is recommended. The CSU trial found elevated liver enzyme values (particularly alkaline phosphatase) in some CBD-treated dogs. Whether this represents liver stress or a normal induction effect is not fully established. If your pet is on CBD, discuss liver monitoring with your vet.
- Drug interactions are a real risk. CBD inhibits liver enzymes involved in metabolizing phenobarbital — potentially altering blood levels of your pet's primary medication. Blood level monitoring may be warranted after starting CBD. Never adjust anti-seizure medication dosing based on perceived CBD effects without veterinary guidance.
- Product variability is significant. Consumer CBD products vary widely in actual CBD content, purity, and quality. The product used in the CSU study was pharmaceutical-grade — not equivalent to most over-the-counter products.
MCT oil and dietary ketosis
MCT-enriched diets have the most robust evidence base among dietary adjuncts for canine epilepsy. A randomized controlled trial from the Royal Veterinary College (Law et al., 2015) found that dogs fed an MCT-enriched diet showed a significantly greater proportion achieving meaningful seizure reduction compared to those on a control diet. Not all dogs responded, and the evidence base is smaller than that for established medications — but it represents a reasonable, low-risk adjunct to discuss with your veterinarian. See Guide 12 for the full detail on MCT diet evidence.
Omega-3 fatty acids
Omega-3 fatty acids (EPA and DHA from marine sources) have anti-inflammatory and potentially neuroprotective biological properties that have prompted interest alongside epilepsy management. Direct evidence in veterinary epilepsy specifically is limited. However, omega-3 supplementation at appropriate doses is generally considered safe for most dogs and may offer broader health benefits. This should be framed as adjunctive support with a biologic rationale, not an established treatment. Discuss appropriate dosing and formulation with your vet.
Acupuncture
Acupuncture has been explored as an adjunct in companion animal epilepsy. High-quality controlled trial evidence for seizure frequency reduction specifically is limited — most studies are small and lack rigorous controls. Some owners report subjective improvements in their pet's general wellbeing, stress levels, or behavior following acupuncture, but these observations are difficult to assess without controlled studies. Acupuncture is generally considered low-risk when performed by a qualified practitioner. If you are interested, seek a veterinarian with formal veterinary acupuncture certification.
Herbal supplements and other products
Various herbal products are marketed for seizure support in pets. The evidence base for these is extremely limited in veterinary epilepsy, and some carry meaningful risks of drug interactions with anti-seizure medications. Always disclose any herbal or dietary supplements to your veterinarian before use — and treat claims of seizure control with significant caution.
Some supplements alter the blood levels or effectiveness of anti-seizure medications — CBD in particular has documented enzyme interactions that can affect phenobarbital levels. Your vet cannot account for these interactions if they don't know what you're using. Always disclose everything, even if you're unsure it's relevant.
Currently supported: MCT-enriched diets (clinical trial data for seizure reduction in some dogs); CBD (preliminary trial data suggest possible benefit in some dogs, but evidence remains limited, product quality varies, and safety monitoring is required)
Biologically plausible, evidence limited: Omega-3 fatty acids; acupuncture for general wellbeing
Remains uncertain: Optimal doses for any adjunct therapy; which individual dogs respond to which therapies; long-term safety of CBD with anti-seizure medication
- CBD has preliminary clinical trial data for seizure reduction in some dogs — but no FDA approval, significant product variability, and important safety considerations including liver monitoring and drug interactions
- MCT-enriched diets have the strongest dietary evidence base for canine epilepsy adjunct management
- Omega-3 fatty acids are generally safe with a biologic rationale; seizure-specific evidence is limited
- Acupuncture has limited controlled evidence for seizure reduction; some owners report wellbeing benefits
- Always disclose all supplements to your vet — drug interactions, particularly with phenobarbital, are a real risk
- No adjunct therapy replaces anti-seizure medication prescribed by your veterinarian
Disclosure: PetSeizureCare does not sell or benefit from the sale of any products or therapies discussed in this guide. References to specific therapies are for educational purposes only and do not constitute endorsement.
- McGrath S, et al. Randomized blinded controlled clinical trial to assess the effect of oral cannabidiol administration on seizure frequency in dogs with intractable idiopathic epilepsy. Journal of the American Veterinary Medical Association. 2019;254(11):1301–1308. doi.org/10.2460/javma.254.11.1301
- Law TH, Davies ESS, Pan Y, et al. A randomised trial of a medium-chain TAG diet as treatment for dogs with idiopathic epilepsy. British Journal of Nutrition. 2015;114(9):1438–1447. doi.org/10.1017/S000711451500238X
- Packer RMA, Law TH, Davies E, Zanghi B, Pan Y, Volk HA. Effects of a ketogenic diet on ADHD-like behavior in dogs with idiopathic epilepsy. Epilepsy & Behavior. 2016;55:62–68. doi.org/10.1016/j.yebeh.2015.11.014
- Bhatti SFM, et al. International veterinary epilepsy task force consensus proposal: medical treatment of canine epilepsy in Europe. BMC Veterinary Research. 2015;11:176. doi.org/10.1186/s12917-015-0464-z
Last reviewed: May 2026. This guide is informed by current veterinary neurology literature and is for educational purposes only. It is not a substitute for advice from your veterinarian.
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