Assertion: comfrey's leaf | /r/MadeOf | allantoin and rosmarinic acid
Facets:
Source sentences:
text: Comfrey (Symphytum officinalis) herb and leaf contains allantoin and rosmarinic acid; comfrey also contains pyrrolizidine alkaloids.
text: Comfrey leaves and roots contain allantoin and rosmarinic acid, substances that help new skin cells grow and increases general rates of cell multiplication, along with other substances that reduce inflammation and keep skin healthy .