If you have not done so, feel free to give your lab baby aspirin twice a day (coated aspirin), and we administered Glucosomine with MSM to our small dogs - 1 pill each day - the lab might need 2. It really helps -
Someone on my dog list recommended Gluc w/MSM (rather than with condroitin), and I bought some, and tried it myself to see what I thought. It was fabulous! My body really needed the MSM. I would not want to live without it, honestly.
I even gave it to my Mom who had dementia, altho she was functioning still in her own home, next door to me.
For both of us, it helped with pain and mental capabilities and depression.
My dogs always got their share, and even tho they had arthritis, never had to minimize their walks or other activities, altho they were more careful.
I am going to put Glusosomine with MSM on my list. Did you give your dogs human brands of Glucosomine?
Thanks for the info.