musti, don't be so negative. The guy is just asking what he can give his dog so the dog can live in some degree of comfort. He's not looking for some magic elixir to make the dog act and run like a pup again. Because something didn't work for you doesn't mean it may not work for someone else or their pet. And you recommendation of asprin is not real good either. Asprin can be really tough on the dogs stomach. You might get by with some low dosages but I'd be careful.
Best advice is to ask your vet. There is a vet or two on this site so maybe they can offer some advice also.
Thanks for everybody's input, Yes I have also heard rimadyl is dangerous, I have had him on glucosamine in the past, did it work? Some days it looked like it did and others it did not, I am going to put him back on just for peace of mind, I know there is know "magic pill" I've been hunting this dog since he was a pup, and have a ton of respect for him, and many many memories, and just want to do my part I keep him comfortable and hunting a little longer, thanks everyone.