Comvita Olive Leaf Complex with Peppermint Flavour contains Olive Leaf Extract made from fresh leaves. Everyday Antioxidant and Immune Support. 400% greater antioxidant power than Vitamin C Made from fresh leaves. Comvita's Olive Leaf Extract does not contain any Olive Leaf Extract powders or artificially boosted oleuropein products. Ingredients Olea europaea leaf extract liquid concentrate., glycerol. Suitable for vegetarians and Vegans. EQUIV. Olea europaea (Olive) leaf fresh = 1000mg/mL EQUIV. Oleuropein = 4.0 to 4.8mg/mL High quality fresh Olive Leaf extracts contain around 100 naturally occurring compounds. At least twelve of these compounds are known to be powerful antioxidants. Oleuropein is the most commonly measured antioxidant in olive leaves, however it is not the only one.