Hills Prescription Diet Feline j/d is clinically proven to improve mobility in 30 days with the right balance of healthy nutrients & special omega-3 oil. Key Benefits: Clinically proven to help cats walk, run, play & climb stairs more easily, see a difference in 30 days Helps your cat walk, run & play better by soothing aching joints & preserving healthy cartilage. Helps maintain joint cartilage thanks to EPA, a special omega-3 fatty acid from fish oil & glucosamine & chondrotin sulphate from natural sources. By purchasing Hills Prescription Diet Feline j/d you confirm your pet has been examined by a vet who has recommended the use of this food on the basis of examination & diagnosis. You understand it is recommended while your pet is being fed Hills Prescription Diet Feline j/d, you seek veterinary advice at least every 6 months regarding the usage of this food & the on-going care of your pet. Should your pets condition deteriorate in any way while using Hills Prescription Diet Feline j/d seek immediate veterinary advice.