Immune C by Patrick Holford contains potent antioxidents to help maintain a healthy immune system. It contains vitamin C & zync with plant extracts & also high strength of elderberry 2 tablets provide: Vitamin C 1800mg, Black Elderberry Extract 100mg, Ginger 40mg, Bilberry Extract 20mg, Zinc 6mg. Ingredients Vitamin C preparation (ascorbic acid with hydroxypropyl methylcellulose), bulking agent (microcrystalline cellulose), black elderberry extract, ginger powder, anti-caking agents (magnesium stearate & silicon dioxide), standardised bilberry extract, zinc citrate trihydrate, glazing agent (glycerine & hydroxypropyl methylcellulose) Non-active Ingredients: Microcrystalline cellulose, magnesium stearate & silicon dioxide Tablet Coating: Glycerine & hydroxypropyl methylcellulose