The phytochemical analysis of the extracts of Linaria vulgaris, has allowed to underline an iridoidic pattern similar to that of the other Linaria plants, with the presence of antirrinoside, antirride, 6-beta-idrossiantirride, 10-beta-glucosilaucubina and a new iridoidic compound, whose structure was demonstrated to be that of 4-carboxy-boonein.