by EBSCO CAM Review Board


Boldo is a tree that grows in South America. Its leaves can be made into a tea. It can also be taken as a pill or powder.


There aren’t any advised doses for boldo.

What Research Shows

There is not enough data to support that boldo is helpful in treating health problems. We will review future studies as they are published.

Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.

Safety Notes

It may be safe to take ascaridole-free boldo for a short time. Ascaridole is a naturally occurring chemical in boldo that may damage the liver. Not enough studies have been done to say whether it is safe to take for a long period.


Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse, such as:

  • People taking medicine to slow or prevent blood clots should talk to their doctor before taking boldo. It may increase the risk of bleeding.


REF1 Peumus boldus—Molina. Plants for a Future website. Available at: Accessed February 17, 2020.

Revision Information

  • Reviewer: EBSCO CAM Review Board
  • Review Date: 03/2019
  • Update Date: 02/14/2020