Irit leaf is a mid level herb that can be cleaned at level 40 Herblore. It is the eighth lowest level herb available. Each cleaned irit leaf yields 8.8 Herblore experience. It is commonly dropped while fighting chaos druids, but can be dropped by almost every monster capable of dropping herbs.
If an irit leaf is mixed with an eye of newt, it creates a Super attack (3), yielding 100 Herblore experience per potion. A Herblore level of 45 is needed to create it.