Assertion: comfrey's alkaloid | /r/AtLocation | ragwort
Facets:
Source sentences:
text: Since the discovery that their may be some risk due to the presence of pyrrolizidine alkaloids, which are also present in ragwort, of liver damage best practice is to limit the amount of comfrey fed to horses to just a handful a day of fresh leaves or 20 to 30 grams per day of dried leaf.