Olive leaf is an herb that comes from the same Mediterranean tree from which olive oil is produced. The whole herb is tinctured or used to make tea, usually in combination with other herbs to enhance flavour. Olive leaf, derived from Olea europaea, is a potent herbal remedy rich in polyphenols, notably oleuropein, which provides antioxidant, anti-inflammatory, and antimicrobial benefits. Often consumed as tea or extract, it supports cardiovascular health, helps manage blood pressure and boosts the immune system.