Truckee Meadow Herbs is a health food retailer serving the Reno area.
Table of Contents > Herbs & Supplements > Blessed thistle (Cnicus benedictus L.) Print

Blessed thistle (Cnicus benedictus L.)

Image

Also listed as: Cnicus benedictus L.
Related terms
Background
Evidencetable
Tradition
Dosing
Attribution
Bibliography

Related Terms
  • Bitter thistle, Carbenia benedicta, cardin, Cardo Santo, Carduus benedictus, Chardon Benit, Cnici benedicti herba, cnicus, holy thistle, Kardo-benedictenkraut, St. Benedict thistle, salonitenolide, spotted thistle.
  • Note: Blessed thistle should not be mistaken for milk thistle (Silybum marianus) or other members of the thistle family.

Background
  • Blessed thistle leaves, stems, and flowers have traditionally been used in "bitter" tonic drinks and in other preparations taken by mouth to enhance appetite and digestion. Blessed thistle may also be included in the unproven anti-cancer herbal remedy Essiac®. This herb has been tested in laboratory studies for its properties against infections, cancer, and inflammation with promising results. However, high-quality trials showing benefits in humans are lacking.

Evidence Table

These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. GRADE *


Laboratory studies report that blessed thistle (and chemicals in blessed thistle such as cnicin and polyacetylene) has activity against several types of bacteria and no effects on some types. Reliable human study is lacking. Further evidence is necessary in this area before a firm conclusion can be drawn.

C


Blessed thistle is traditionally believed to stimulate stomach acid secretion and has been used as a treatment for indigestion or gas. However, there is limited scientific study in these areas. Additional research is needed before a firm conclusion can be reached.

C


Laboratory studies report no activity of blessed thistle against herpes viruses, influenza, or poliovirus. Effects of blessed thistle (or chemicals in blessed thistle called lignans) against HIV are not clear. Human research of blessed thistle as a treatment for viral infections is lacking.

C
* Key to grades

A: Strong scientific evidence for this use
B: Good scientific evidence for this use
C: Unclear scientific evidence for this use
D: Fair scientific evidence for this use (it may not work)
F: Strong scientific evidence against this use (it likley does not work)


Tradition / Theory

The below uses are based on tradition, scientific theories, or limited research. They often have not been thoroughly tested in humans, and safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider. There may be other proposed uses that are not listed below.

  • Abortifacient, anorexia, appetite stimulant, astringent, bleeding, blood purifier, boils, breast milk stimulant, bubonic plague, cancer, cervical dysplasia, choleretic (bile flow stimulant), colds, contraceptive (birth control), diaphoretic (sweat stimulant), diarrhea, digestion enhancement, diuretic (increasing urine), expectorant, fever reducer, gallbladder disease, inflammation, jaundice, liver disorders, malaria, memory improvement, menstrual disorders, menstrual flow stimulant, painful menstruation, rabies, salivation stimulant, skin ulcers, wound healing, yeast infections.

Dosing

Adults (over 18 years old)

  • Tea, tinctures, and liquid extracts are available. Traditional doses include 1.5 to 3 grams of dried blessed thistle flowering tops steeped in 150 milliliters of boiling water taken three times daily or 1 to 3 teaspoons of dried blessed thistle herb in one cup of boiling water for 5 to 15 minutes taken three times daily (sometimes recommended to be used 30 minutes before meals). 1.5 to 10 milliliters of other preparations have been taken by mouth up to three times daily. May be bitter in taste.

Children (under 18 years old)

  • Not recommended due to lack of lack of reliable safety data.

Attribution
  • This information is based on a systematic review of scientific literature edited and peer-reviewed by contributors to the Natural Standard Research Collaboration (www.naturalstandard.com).

Bibliography
  1. Cobb E. Antineoplastic agent from Cnicus benedictus. Patent Brit 1973;335:181.
  2. Eich E, Pertz H, Kaloga M, et al. (-)-Arctigenin as a lead structure for inhibitors of human immunodeficiency virus type-1 integrase. J Med Chem 1996;39(1):86-95.
  3. Kataria H. Phytochemical investigation of medicinal plant Cnicus wallichii and Cnicus benedictus L. Asian J Chem 1995;7:227-228.
  4. May G, Willuhn G. [Antiviral effect of aqueous plant extracts in tissue culture]. Arzneimittelforschung 1978;28(1):1-7.
  5. Novitch M, Schweiker R. Orally administered menstrual drug products for over-the-counter human use. Federal Register 1982;47:55076-55101.
  6. Perez C, Anesini C. In vitro antibacterial activity of Argentine folk medicinal plants against Salmonella typhi. J Ethnopharmacol 1994;44(1):41-46.
  7. Perez C, Anesini C. Inhibition of Pseudomonas aeruginosa by Argentinean medicinal plants. Fitoterapia 1994;65(2):169-172.
  8. Ryu SY, Ahn JW, Kang YH, et al. Antiproliferative effect of arctigenin and arctiin. Arch Pharm Res 1995;18(6):462-463.
  9. Schimmer O, Kruger A, Paulini H, et al. An evaluation of 55 commercial plant extracts in the Ames mutagenicity test. Pharmazie 1994;49(6):448-451.
  10. Schneider G, Lachner I. [Analysis and action of cnicin]. Planta Med 1987;53(3):247-251.
  11. Vanhaelen-Fastre R. [Constitution and antibiotical properties of the essential oil of Cnicus benedictus]. Planta Med 1973;24(2):165-175.
  12. Vanhaelen-Fastre R. [Polyacetylen compounds from Cnicus benedictus]. Planta Medica 1974;25:47-59.
  13. Yang L, Lin S, Yang T, et al. Synthesis of anti-HIV activity of dibenzylbutyrolactone lignans. Bioorg Med Chem Lett 1996;6(8):941-944.

Copyright © 2011 Natural Standard (www.naturalstandard.com)


The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

Search Site