Supplements can be very effective in controlling the symptoms of
dog arthritis; unfortunately, in some dogs, they can irritate the
digestive tract and can cause skin itching. When your dog experiences
any of these side effects, your pet may be allergic to the supplement it
is receiving. 
Controlling your pet's weight will help reduce the
pain and swelling associated with dog arthritis. Diet and exercise are
still the safest methods. However, it takes some time before your pet
loses weight, which is why some people look for quick fixes.
Dog arthritis is very common in senior dogs. With as many as nine
million dogs affected in the U.S.A. to date, there are plenty of
companies looking to snatch share of the money that’s spent every year
on dog arthritis treatment.