Assertion: comfrey's use | /r/HasProperty | internal
Facets:
Source sentences:
text: However, studies have shown that comfrey is not safe to be taken for internal use as the plant contains pyrrolizidine alkaloids, which are toxic to the liver.
text: Comfrey is recommended for external use and is very beneficial for skincare products.
text: Comfrey is banned for internal use in quite a few countries.
text: While comfrey is an herb with a long history of many different uses, its internal use has become quite controversial due to scientific studies, some dating back 40-60 years, that revealed potentially harmful effects of pyrrolizidine alkaloids (PAs) (Moreira et al., 2018), which are found in comfrey.
text: Its internal use is a bit controversial, as the U.S. Food and Drug Administration has issued warnings about comfrey’s pyrrolizidine alkaloid content, which can cause liver damage at high doses, but you’ll find herbalists recommending its limited use as a tea as well as in topical applications.
text: Comfrey is rich in this kind of alkaloids, which are toxic and make its internal use dangerous.
text: Its internal use is totally contraindicated.
text: These studies led to current conventional wisdom, which dictates that comfrey be restricted to external use only.