I would recommend fish oil without the glucosamine and chondroitin. Fish oil has always been a wonderful product. Still remember the spoonfuls Mum gave us when we were kids. Now that was nasty tastin lol. Peace GS
There is a product called "Agility" http://www.yourpetslife.com/dog-joint-supplement.htm I have seen it work wonders on a 14 year old black lab. In my experience it does everything they claim it does.