Romania is blessed with a rich spontaneous flora, but some of the plants are toxic by their consumption in cattle, affecting the health, productions and endangering consumer safety. Sometimes even the consumption of small amounts causes poisoning with a broad extension: from mild, moderate to severe and with chronic or acute manifestations. Plant action is not similar.

Through the regulations CE.834/2007 and implementing rules CE 889/2008, regarding the organic production the treatment with antibiotics in livestock are extremely limited. Therefore plants can replace medicines in treatment of certain conditions. The plants used in ethnoveterinary medicine are varied depending on area, but this review refers to plants existing in Romania identical to those existing in other areas of the world, some being used only in certain areas, others in areal extended, but it can be a start for farmers to seek natural remedies. There are 66 plant species which belong to a large number of families, but most plants belong to the family Asteraceae (11 -16.66%), followed by species of family Solanaceae (6.06%) and family: Malvaceae, Adoxaceae, Convolvulacea, Euphorbiaceae, Fabaceae with 3 species each (4.54%). Of the plants, 11 species (16.8%) are considered to be toxic and 18 (27.2%) potentially toxic but, have therapeutic effect in extremely small amounts. Regardless of the area, plants are used in the same treatments in different form.