My 14 year old Schnauzer is on her third economy-size bottle. I was quite skeptical when I started using the product. After about 2 weeks, she quit limping and she jumps up on my lap…hasn’t done that in years! She has become a watch dog again too, barking at strangers, etc. She hasn’t done that in quite a while either. Anyway, I like your product and will continue giving it to my Schnauzer. Thanks!