Berocca Immune Daily Defence Blackcurrant Tablets is Advanced Triple action formula to support your body's daily immune defences and strengthen your immune system health to help keep you and your family well and healthy. It enhances your immune system to help meet the challenges of an active life and helps reduce the occurrence of the common cold and helps decrease the severity and duration of common cold symptoms. When used daily, it helps the immune system all year round and at the first sign of common colds and flu. Contains high dose Vitamin C (1000 mg) to support your body's natural defences. Our bodies cannot make Vitamin C or store large amounts of Vitamin C so you may need additional support. It has vitamin D to support immune cell function, Zinc to support antibody production.