I also did not see the interview but I think Jay and LindaRuth are right .
Glucosamine .... cosequin and glyco-flex are widely used in the animal world to promote good joint health . I have used cosequin for horses for years with excellent results . And a few dogs in their golden years.
NSAID ( nonsteroidal anti-inflammatory prescription drugs ) such as etogesic , deramaxx and rimadyl are also widely used but not without side effects some serious ones such as kidney and liver problems . But for many animals it provides life for them without pain . Quality of life becomes the main issue .