Cat Supplements: Which Ones Actually Work

Do Cats Need Supplements?

Cats eating a complete, balanced commercial diet typically do not need supplements. However, certain conditions may benefit from targeted supplementation.

Supplements with Good Evidence

Omega-3 Fatty Acids

Fish oil (EPA/DHA) has strong evidence for reducing inflammation and supporting skin/coat health.

Probiotics

Specific strains like Enterococcus faecium can help with stress-related diarrhea.

Glucosamine/Chondroitin

May provide modest benefit for cats with osteoarthritis.

Supplements to Avoid

Avoid multivitamins for cats on balanced diets — excess vitamins A and D can be toxic. Always consult your vet first.