The aim of this research work was to indicate the influence of Citrosept preparation and Scutellaria baicalensis root extract, administered per os to growing turkey hens in 3 different dosages, on the content of selected mineral elements in blood plasma of slaughter turkey hens. An attempt was also made to specify the most effective dosage of the applied preparations with the highest efficiency regarding increased levels of examined macro- and microelements in the birds’ blood. The research experiment was conducted on 315 turkey hens randomly divided into seven groups, each consisting of 45 turkey hens. Group C constituted the control group without experimental additions of the above-mentioned preparations. In turkey hens in groups II–IV, Citrosept preparation was instilled to water in the following dosages: Group II – 0.011 ml/kg of bm; Group III – 0.021 ml/kg of bm; Group IV – 0.042 ml/kg bm. For birds which belonged to groups V–VII, a preparation of Scutellaria baicalensis root extract was instilled to water in the following dosages: Group V – 0.009 ml/kg of bm; Group VI – 0.018 ml/kg of bm, Group VII – 0.036 ml/kg bm. In the examined plant extracts and blood plasma of the birds the levels of Na, K, Ca, Mg, Cu, Zn, and Fe were identified. The use of examined extracts influenced changes in the levels of all tested elements in slaughter turkey hens’ blood plasma. An upward tendency was recorded in the level of calcium and magnesium, and a downward tendency of sodium, potassium, copper, zinc, and iron in relation to the results achieved in the control group.