Research on experimental animals showed: - Not determined LD50 acute toxicity of the drug in mice with doses of 200 g / kg of body weight; and non-lethal drug doses mouse when 60g / kg of body weight in 45 days; - On rabbit GDU-103 medication doses 15g / kg day for 45 days, change some hematological indicators compared with the control group no significant, with p>0.05 - Drugs GDU-103 does not change the index of pulse, blood pressure in rats when administered in doses white 35g / kg of body weight for 45 consecutive days.