Is there a difference between essential oils and standardized herbal extract supplements?
A huge difference. Most of the herbal extractions are done in alcohol or glycerine and extract different properties from the plants than come from steam distillation, plus the EO’s are much more powerful…the reason they need diluting. Also, herbal extracts are meant to be taken orally, as “nutritional substitutes.” Very few authorities will suggest taking the oils internally except under medical supervision.