Toxic if swallowed are aniseed, basil, bay, buchu, cassia, cinnamon(bark and leaves) clove, fennel. and tarragon.
Toxic if swallowed or applied in massage with skin are almond(bitter) boldo leaf, calamus, camphor, horseradish, jabarandi leaf, mugwort, mustard, nightshade, pennyroyal (both European and North American) rue, sassafras, savin, southernwood, stinging nettles, tansy, thuja, wintergreen, wormseed, wormwood.
Toxic if swallowed or applied in massage with skin are almond(bitter) boldo leaf, calamus, camphor, horseradish, jabarandi leaf, mugwort, mustard, nightshade, pennyroyal (both European and North American) rue, sassafras, savin, southernwood, stinging nettles, tansy, thuja, wintergreen, wormseed, wormwood.