Boldo (Peumus boldus)
Overview
Boldo is a strongly aromatic multi-branched evergreen shrub or tree growing to 20 feet. It has egg-shaped leathery leaves with a lemony scent, clusters of white or yellow bell-shaped flowers, and small yellow berries. Native to Chile and Peru, it has become naturalized in the Mediterranean region and the West Coast of North America, where it grows on dry sunny slopes and in mountain pastures in the Andes. It is widely cultivated, and its leaves are gathered throughout the year. Boldo is a valued remedy in Latin American herbal medicine and is used by the Araucanian people in Chile as a tonic.
Traditional uses & properties
Boldo stimulates liver activity and bile flow, making it particularly effective for gallstones and liver or gallbladder pain. The isoquinoline alkaloids, especially boldine, along with volatile oils and flavonoids, contribute to its cholagogue and hepatoprotective actions. Research has shown boldine to be a potent antioxidant. Boldo is typically taken for a few weeks at a time as a tincture or infusion. It also acts as a mild urinary antiseptic and demulcent, useful for infections such as cystitis. Traditionally, it has been employed for dyspepsia, digestive disturbances, constipation, and rheumatism, though there is little evidence to support its use as a slimming aid.
Safety & precautions
Do not take during pregnancy. Subject to legal restrictions in some countries due to the presence of ascaridole, a toxic constituent in the volatile oil. The dose and duration of treatment should be restricted to minimize risk. One case report suggests boldo may interact with warfarin; a woman taking warfarin experienced a modest rise in INR when using boldo (and fenugreek). The mechanism is unknown, and it is unclear whether boldo, fenugreek, or both were responsible. Boldo contains natural coumarins, but their anticoagulant activity is uncertain. Until more is known, monitor INR closely if combining boldo with anticoagulants.
Habitat
Native to Chile and Peru, boldo has naturalized in the Mediterranean region and the West Coast of North America. It grows on dry sunny slopes and in mountain pastures in the Andes and is widely cultivated. Leaves are gathered year-round.
Traditionally used for
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