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Potentially Toxic Herbs


Caution should always be used when taking these herbs because of their potential for harmful effects.


Blue Cohosh (Caulophyllum thalictroides) - May induce labor

Borage (Borago officianlis) - Living causing cancer

Calamus (Acorus calamus) - Associated with malignant tumors

Chaparral (Larrea divaricata) - Liver toxicity

Colt's foot (Tussilago farfara) - Cancer causing and liver toxicity

Comfrey (Symphytum officinale) - Liver cancer and Veno-occulusive disease

Ephedra (Ephedra sinica) - High dosages can lead to asphyxiation and heart failure

Germander (Teucrium chamedrys) - Liver toxicity

Licorice (Glycrrhiza glabra) - Liver toxicity

Poke Root (Phytolacca americana) - Poisonous, containing toxic lectins

Sassafras (Sassafras albidum) - Liver cancer in small animals (still on the market)



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