butterbur

butterbur,

n Latin names:
Petasites hybridus, Petasites officinalis, Tussilago petasites; parts used: buds, leaves, roots, stems; uses: sedative, diuretic, pertussis, asthma, cough, arthritis, irritable bowel syndrome; precautions: pregnancy, lactation, children; can cause nausea, vomiting, liver damage, constipation, stomach cramps, discoloration of the epidermis, dyspnea, carcinogenesis from pyrrolizidine alkaloids. Also called
blatterdock, bog rhubarb, bogshorns, European pestroot, flapperdock, langwort, sweet coltsfoot, umbrella leaves, or
western coltsfoot.