My dog has arthritis, any homeopathic ideas?

my dog had mild athritis too, a well known product to help them which did wonders for my dog and my friends dog was called sachas blend, comes in a tub from a good pet shop or veterinarian. Also the scab could be a little sunspot from old age...normal for older goggies...its hard to watch them in pain...so sachas blend is my choice, i live in australia though..im not sure its everywhere