According to this site, catnip contains 'vitamins A, B1, B2, B3, B6, B12, acetic acid, biotin, buteric acid, choline, citral, essential oils, folic acid, inositol, manganese, pantothenic acid, para-aminobenzoic acid, phosphorus, sodium, sulphur'.


http://www.india-herbs.com/herbal_glossary/id/1807