It is likely safe for most people to take blessed thistle for a short time. People with certain plant allergies may have an allergic reaction to blessed thistle. Not enough studies have been done to say whether it is safe to take for a long period.

Interactions

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 with plant allergies should talk to their doctor before taking blessed thistle. It may cause a reaction.

References►

1. Bruno M, Rosselli S, Maggio A, et al. Antibacterial evaluation of cnicin and some natural and semisynthetic analogues. Planta Med. 2003;69:277–81.

2. Barrero AF, Oltra JE, Alvarez M, et al. New sources and antifungal activity of sesquiterpene lactones. Fitoterapia. 2000;71:60–4.

Last reviewed May 2019 by EBSCO NAT Review Board Eric Hurwitz, DC
Last Updated: 2/14/2020

EBSCO Information Services is fully accredited by URAC. URAC is an independent, nonprofit health care accrediting organization dedicated to promoting health care quality through accreditation, certification and commendation.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

To send comments or feedback to our Editorial Team regarding the content please email us at healthlibrarysupport@ebsco.com. Our Health Library Support team will respond to your email request within 2 business days.