Hazardous Essential Oils
The below chart displays essential oils that should not be used in aromatherapy without the express administration by a qualified aromatherapy practitioner. Many should not even be used by a qualified practitioner. Do not assume that an oil is safe to use if it is not on this list.
Ajowan
Trachyspermum copticum
Almond, Bitter
Prunus dulcis var. amara
Arnica
Arnica Montana
Birch, Sweet
Betula lenta
Boldo Leaf
Peumus boldus
Broom, Spanish
Spartium junceum
Calamus
Acorus calamus var. angustatus
Camphor
Cinnamomum camphora
Deertongue
Carphephorus odoratissimus
Garlic
Allium sativum
Horseradish
Armoracia rusticana
Jaborandi
Pilocarpus jaborandi
Melilotus
Melilotus officinalis
Mugwort
Artemisia vulgaris
Mustard
Brassica nigra
Onion
Allium cepa
Pennyroyal
Mentha pulegium
Rue
Ruta graveolens
Sassafras
Sassafras albidum
Thuja
Thuja occidentalis
Wintergreen
Gaultheria procumbens
Wormseed
Chenopodium ambrosioides var. anthelminticum
Wormwood
Artemisia absinthium
Important Note: The information provided in the Oil Profiles area is for educational purposes only. This data is not considered complete and is not guaranteed to be accurate.
I will be adding more ot this section shortly.
Information obtained at http://www.aromaweb.com/essentialoils/default.asp

