Short answer: Pet-formulated CBD (without THC and from a reputable brand with a COA) is generally safe for dogs at studied doses of 2-5 mg/kg twice daily, with mild GI upset, drowsiness, and mild elevations in liver enzymes as the most common side effects.
What you should actually do
- Use a third-party lab certificate of analysis (COA) – the only way to verify dose + THC content.
- Avoid any product containing THC – it’s neurotoxic in dogs.
- Recheck ALT/ALP after 8 weeks of daily use; mild elevation is common, persistent rise is not.
- Studied indications: osteoarthritis pain (some evidence), idiopathic epilepsy adjunct (some evidence), anxiety (limited evidence).
- Not a replacement for NSAIDs, gabapentin, or Librela – adjunct only.
Most of the early scientific evidence for CBD in dogs comes from the Cornell osteoarthritis study (McGrath et al. 2018) and a Colorado State epilepsy study – both showed modest benefit at 2-5 mg/kg twice daily, both used a pharmaceutical-grade product. The most common adverse effect is elevated alkaline phosphatase (ALP) – real but not synonymous with liver injury, and reversible. Diarrhoea and sedation are the most commonly reported owner-visible side effects.
Practical buying rules: only products labelled for pets, only brands that publish a current third-party COA, only oils or treats with a precise per-dose mg of CBD on the label, and zero detectable THC. CBD interacts with hepatic CYP enzymes, so dogs on phenobarbital, ketoconazole, or cyclosporine need vet involvement. There is no veterinary-FDA-approved CBD product yet, so the legal status of a vet writing you a ‘CBD recommendation’ varies by state.
Dig deeper
- Arthritis & mobility score calculator
- Librela dosage calculator (anti-NGF arthritis injection)
- Idiopathic epilepsy seizure diary calculator
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⚕️ Medical Disclaimer
The information on this page is intended for educational purposes only and does not replace a hands-on veterinary examination. Drug doses depend on your dog’s complete clinical picture, concurrent medications, and the exact product formulation. Always confirm dosing with your veterinarian before administering any medication, and contact a 24-hour veterinary emergency service or animal poison control immediately if you suspect a medication overdose or adverse reaction. Editorial standards: every drug dose published on PuppaDogs is cross-checked against multiple authoritative veterinary references and reviewed by PuppaDogs Veterinary Editorial Team before publication.
