Complete Guide to Essential Oils/A to Z of essential oils/Oregano

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Oregano (Origanum vulgare)

Oregano oil comes from the flowering tops of the Origanum vulgare plant. It has a spicy scent.


Oregano oil is not used in aromatherapy due to its toxicity and irritant effect.


  • Don't use oregano oil during pregnancy.
  • Oregano oil is very irritating to the skin and mucus membranes.