Antiparasitic activity of two Lavandula essential oils against Giardia duodenalis, Trichomonas vaginalis and Hexamita inflata

Parasitol Res. 2006 Nov;99(6):722-8. doi: 10.1007/s00436-006-0234-8. Epub 2006 Jun 2.


Two essential oils derived from Lavandula angustifolia and Lavandula x intermedia were investigated for any antiparasitic activity against the human protozoal pathogens Giardia duodenalis and Trichomonas vaginalis and the fish pathogen Hexamita inflata: all of which have significant infection and economic impacts. The study has demonstrated that low (< or = 1%) concentrations of L. angustifolia and L. x intermedia oil can completely eliminate T. vaginalis, G. duodenalis and H. inflata in vitro. At 0.1% concentration, L. angustifolia oil was found to be slightly more effective than L x intermedia oil against G. duodenalis and H. inflata. The potential applications are discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antiprotozoal Agents / pharmacokinetics
  • Antiprotozoal Agents / pharmacology*
  • Antitrichomonal Agents / pharmacology
  • Diplomonadida / drug effects*
  • Giardia lamblia / drug effects
  • Lavandula / chemistry
  • Oils, Volatile / pharmacokinetics
  • Oils, Volatile / pharmacology*
  • Plant Oils / pharmacology
  • Trichomonas vaginalis / drug effects*


  • Antiprotozoal Agents
  • Antitrichomonal Agents
  • Oils, Volatile
  • Plant Oils