An extract of a plant of the genus Gynostemma is described. The extract is obtainable by a process wherein an aqueous extract is further extracted with n-butanol. The extract has a high level of actives, such as saponins, and/or a low level of impurities. The extract is particularly suitable for use in food or beverage compositions owing to its high purity and clean taste. Such compositions may be used to reduce the blood lipid levels of an individual and provide associated health benefits.