/b/veterinary-nursing-news/posts/virbac-adds-eggshell-to-its-joint-and-mobility-diet Virbac has added eggshell membrane to its Veterinary HPM Joint & Mobility Clinical Diet, an ingredient which it says is proven to be very effective in reducing joint discomfort in dogs, demonstrating results in 6 weeks 1 . Eggshell membrane is richen-USTelligent Community 10