Omega-3 (fish oil)
The best-supported supplement for joint pain in dogs. A 2022 review of the research found omega-3 products helped dogs with arthritis, and some studies found dogs needed less pain medicine.
- Look for a product made for dogs that lists the EPA and DHA content
- Ask your vet for the right dose for your dog's weight; low-dose treats often contain too little to help
- Can cause loose poo; it also adds calories, so adjust meals
- Flaxseed oil isn't a good swap: dogs can't use it well
