Assertion: comfrey | /r/MadeOf | substance
Facets:
Source sentences:
text: Comfrey contains a substance called pyrrolizidine alkaloids that is considered toxic for the liver.
text: It also contains other substances that encourage skin health and help to reduce inflammation.
text: Modern science has confirmed that comfrey contains substances that aid in the healing of bruises and bone, muscle and connective tissue injuries and may help ease joint pain.
text: It is also used in cosmetics because comfrey contains substances that help skin regrow, including allantoin, rosmarinic acid and tannins.
text: Comfrey contains substances that help skin regrow, including allantoin, rosmarinic acid, and tannins.