Here are links to some studies I found: OREGANO -- https://www.ncbi.nlm.nih.gov/pubmed/27568869  Sensitivity of Candida albicans to essential oils: are they an alternative to antifungal agents? https://www.ncbi.nlm.nih.gov/pubmed/25952773    Composition, antimicrobial, antioxidant, and antiproliferative activity of Origanum dictamnus (dittany) essential oil. https://www.ncbi.nlm.nih.gov/pubmed/22413147   Effects of cinnamon leaf, oregano and sweet orange essential oils on fermentation and aerobic stability of barley silage. https://www.ncbi.nlm.nih.gov/pubmed/20438322    In vitro antimicrobial, antioxidant, and antispasmodic activities and the composition of the essential oil of Origanum

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