Abstract: The aim of this study was the analysis of the use of Iscador Q as a potential anti-carcinogenic and immunomodulatory drug that affects the concentration of hemoglobin (HB) in the peripheral blood of mice. Iscador Q was injected in the doses of 1, 3 and 5 mg/kg of body mass. The concentration of hemoglobin was marked by Drabkin’s Method. The highest concentration of hemoglobin was observed after the highest dose of Iscador Q was injected. All results were statistically significant.