Long standing research in Scandinavia has shown that rose-hip with a high level of GOPO (glycoside of mono and diglycerol) has an important role to play in the care of joints and joint tissue. It works by discouraging the white blood cells that release degenerative enzymes and toxic free radicals in joints. White blood cells are known to be a contributing factor in the soreness associated with swollen joints. It is an anti-inflammatory. Vitamin C is added to insure consistent levels of this nutrient which is essential for collagen formation and for healthy bones and cartilage. The vitamin C is in the form of sodium ascorbate which is less acidic and therefore gentler on the stomach.