Related Experiment Video
Updated: Jul 11, 2026

Use of Animal Model of Sepsis to Evaluate Novel Herbal Therapies
Published on: April 11, 2012
An in vivo analysis of the herbal compound essiac
Blair J N Leonard1, Deborah A Kennedy, Fong-Chi Cheng
1Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Background:
Essiac is a herbal compound that has been in common use with cancer patients in North America for over 80 years. Despite its relatively widespread use, there are no peer-reviewed published reports of in vivo studies regarding the use of this compound.
Materials And Methods:
Essiac was administered orally to test animals prior to all experiments. Standard assays to test protection from ethanol-induced gastric ulceration and carbon tetrachloride-induced hepatic injury were performed on Wistar rats. Assays of postglucose-load serum glucose and cellular and humoral immune modulation were conducted on ICR and BALB/C mice, respectively.
Results:
Essiac demonstrated a modest gastric protective effect via reduction of ethanol-induced gastric ulceration. However, Essiac did not demonstrate significant hepatoprotective, hypoglycemic or immunomodulatory properties.
Conclusion:
Essiac, administered in established in vivo experimental models, did not significantly demonstrate its purported physiological modifying effects.

