Boosts the strength of the immune system Maintains healthy cognitive ability and function Stabilizes normal energy levels Supports healthy joint mobility Prepared from organically grown and selectively imported herbs from trusted growers. Old Friend is the ultimate daily herbal tonic for the senior dog. The formula is designed to make a noticeable difference in the vitality of the aging canine. It nourishes the body systems that can weaken with time. The aging process can affect the degradation of connective tissue and joints, cardiovascular, adrenal, liver, pancreatic and cognitive function. Old Friend helps the body's natural systems to support joint strength, increased energy levels, mental alertness, and boosted immune system.