Text Box: Dangerous Herbs !! Text Box: Remember, just because something is natural, it Doesn't Make It Safe. The following herbs ”Have the potential to be very harmful or even deadly if ingested”. I suggest avoiding them. However, if you choose to use them, please do your research first. And if you are taking any medication, “Consult Your Doctor Before Using Any Herb”. You Have been Warned!! Aloe Vera Can be a powerful laxative. Borage Harmful in large doses; may cause liver damage and cancer. Broom Toxic; diuretic. Chaparral BANNED IN THE UNITED STATES. Coltsfoot May cause cancer. Comfrey May cause liver damage and cancer. Ephedra Should not be used by people with heart conditions, blood pressure, diabetes or thyroid disease. Now illegal in USA. Floxglove Potent heart toxin !! Juniper Shouldn't be used by women who are pregnant or have kidney disease. Licorice Excessive amounts may cause fluid retention and high blood pressure. Pennyroyal The essential oil may cause convulsions in large doses. Pokeweed May cause respiratory paralysis and convulsion. Rue May make skin more susceptible to sun damage. Sassafras May cause cancer. Yohimbe Side effects include nausea, vomiting, high blood pressure, palpitations, insomnia and tremors.