I'm using this product for my 12 year old Chihuahua and he's 3lbs. He's has a heart condition that he takes 3 meds 3x a day. All he did was sleep and he has joint pain, I have noticed he jumps a bit more in the morning for his breakfast with a bit more movement for him which is great. So far I'm happy to see him move more yes I'd recommend it for older dogs. I'll keep you posted and I see more results. Also my younger chihuahua had it as well he's a year old. Michelle