Assertion: comfrey's alkaloid | /r/HasProperty | detected in the urine
Facets:
Source sentences:
text: Additionally, because externally applied alkaloids are well absorbed and detected in the urine, topical use of comfrey should not exceed an alkaloid exposure of 100 mcg/day.
text: Because externally applied alkaloids are well absorbed (detected in the urine), topical use of comfrey should not exceed an alkaloid exposure of 100 mcg/day.