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Substance Name: Comfrey extract
RN: 84696-05-9


  • Perennial herb Symphytum officinale, in the family Boraginaceae, used topically for wound healing. It contains ALLANTOIN, carotene, essential oils ( OILS, VOLATILE); GLYCOSIDES; mucilage, resin, SAPONINS; TANNINS; triterpenoids, VITAMIN B12, and ZINC. Comfrey also contains PYRROLIZIDINE ALKALOIDS and is hepatotoxic if ingested.

Molecular Formula

  • Unspecified
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Links to Resources

Names and Synonyms

Name of Substance

  • Comfrey
  • Comfrey extract
  • Comfrey leaf extract
  • Extract of comfrey
  • Extract of comfrey leaf
  • Symphytum officinalis extract
  • Symphytum officinalis leaf extract


  • EINECS 283-625-3
  • Symphytum officinale
  • Symphytum officinalis L.

Systematic Name

  • Comfrey, Symphytum officinale, ext.

Registry Numbers

CAS Registry Number

  • 84696-05-9

System Generated Number

  • 0084696059