InterClinical Professional Vitamin C PlusHelps to Reduce Free Radical Damage to Body Cells Supports Collagen and Healthy Connective Tissue Function Supports Healthy Teeth and Bone Maintenance Source of vitamin C. Helps prevent dietary vitamin C deficiency. Vitamin C reduces the duration and severity of common cold symptoms; maintains blood vessel, capillary, skin, immune and nervous system health; supports wound healing and neurotransmitter synthesis; and aids the absorption of dietary iron.