The use or methods of use of extracts comprising one or more special clerodane compounds against inflammatory (including allergic) diseases or conditions, as well as novel compounds of this type, said clerodane derivatives for use against inflammatory (including allergic) diseases or conditions, pharmaceutical formulations comprising them especially for use against inflammatory disease or conditions, and related embodiments; said extract and/or compound(s) for use in the treatment or in the preparation of a medicament (including a nutraceutical) for the prophylactic and/or therapeutic treatment of said disease or condition, as well as their preparation; pharmaceutical or nutraceutical formulations comprising said extract and/or natural compound(s) which are useful in said prophylactic and/or therapeutic treatment, and related embodiments.