Bugleweed is a plant in the mint family. Its leaves and flowers have been used to treat mild hyperthyroidism. It can be taken as a pill or powder. It can also be made into a tea.


There aren’t any advised doses for bugleweed.

What Research Shows

May Be Effective

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

Safety Notes

It is likely safe for most people to take bugleweed for a short time. Not enough studies have been done to say whether it is safe to use 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:

  • Bugleweed may interfere with antithyroid and thyroid hormone medicines and lower blood sugar levels.
  • People taking iodine supplements should talk to their doctor before taking bugleweed. It may change the way your body processes iodine.
  • Bugleweed may affect hormones. It should not be taken during pregnancy or while breastfeeding.



1. Eiling R, Wieland V, et al. [Improvement of symptoms in mild hyperthyroidism with an extract of Lycopus europaeus (Thyreogutt® mono)]. Wien Med Wochenschr. 2013;163(3-4):95-101.

Last reviewed March 2019 by EBSCO CAM Review Board