Possible arthritis in my dog

[rrhoward]

My dog is a poodle terrier mix, ten years old and 23 lbs. He has a problem getting up from a resting position, sleeps all the time and at times shakes. I thought maybe arthritis so I took him to the vet Monday and the vet gave me Metacam but so far it hasn't helped unless it takes longer than that to work. I am also giving him Glucosamine which the pet store recommended. I have had this dog for 8 years and any input on making him feel better would be appreciated as I don't want to keep taking him to the vet seeing as what they gave me hasn't worked.

Thank You
Russell