Boldo is described in some texts under the name Peumus boldus. It is an evergreen tree found in South America. Its fruit can be eaten, but only the leaves are used medicinally.
The German Commission E has approved Boldo leaves for the treatment of uncomplicated digestive difficulty and stomach cramps. Boldo is probably one of the most studied plants.
Boldo is known to be able to enhance digestion by promoting the body’s production of digestive secretions. Boldo is also known for its cell protecting and infection inhibiting properties and it is believed that it stimulates the immune system.
Boldo leaves contain many antibodies such as terpenes, tannins, and alkaloids. These include ascaridol, boldin, isocorydin, and N-methyl laurotetanin. Its content of etheric oils also includes many poisonous substances which cannot be used. This is why only dried leaves are used.
Dosage
Dried leaves: 4 - 5 g daily.
Side effects
Boldo has no side effects if the recommended dosage is not exceeded.
Interactions
Boldo can strengthen the effects of blood thinning medications containing warfarin and therefore should not be used with such medications.
Warnings
Boldo should not be used if pregnant or nursing
Boldo should never be used by people with gallstones or severe liver disease.
Overdosing can cause paralyses.