BACKGROUND: Fourteen species of the genus Iris L is grown in Mongolia. Iris L has been in traditional Mongolia medicine for treatment of urinary and kidney disease. We investigated three species of Iris L such as Iris Bunge /Iris Bungei Maxim/, Iris Tigrida /Iris Tigrida Bge / and Iris lactea /Iris Lactea Pall/ which contains rich amount of biological active substances[1,2]. Urine was collected at tubes during 4 hours, since given experimental and standard preparations orally and compared with control group. As experimental results, the urine levels of treatments groups increased 1.13 fold (Iris Bunge), 1.8 fold (Iris Tigrida), 1.04 fold (Iris Lacteal) and 1.15 fold (Standard or Nefromon) compared with control groups. These results indicated the Iris Tigrida has shown diuretic effect more than other species of Iris L.\Z TOOLS AND METHODS: Adult Balb/c mice, each in the weight range of 20-28g, were obtained from the Vivarium, Drug research institute. The animals divided into five groups of four animals each and kept in cages and housed under standard conditions of temperature, humidity and dark light cycle (12h-12h). Diuretic activity was determined by the following methods of Trendelenburg et al (1980). Before experiment, all the animals received priming dose of 0.9% sodium chloride solution (0.3 ml/20g) and the treated groups were given 0.1ml/20g extracts of Iris L. The standard groups were given 0.1 ml/20g of “Nefromon. Immediately after respective treatments the animals were placed in metabolic cages and urine was collected in a measuring cylinder till 4 hours. RESULTS AND CONCLUSION: Results are shown in the ethanol extract of the whole plant of Iris Tigrida Bge at a dose of 0.1ml/20g observed diuresis during the 4 hours of the test (Tigrida Bge 1.0±0.37 ml versus control 0.55±009 ml, whereas in case of standard Nefromon the volume was found to be 0.63±0.08 ml, p<0.05). As experimental Iris L, results, urine levels of treatments groups increased 1.04 fold (Iris Bunge), 1.8 fold (Iris Tigrida), 1.05 fold (Iris Lacteal) and 1.15 fold (Standard or Nefromon) compared with control groups. These result, indicated the Iris Tigrida has shown diuretic effect more than other species of Iris L. These results indicated the Iris Tigrida has shown diuretic effect more than other species of Iris L. KEY WORDS: Diuretic, medicinal plants, Trendelenburg methods, flavonoids

Introduction: The development of a plant derived supplement with mild effects and reduced toxic and side effects for the treatment of respiratory disease is very crucial. Therefore we tested the cough suppressant effects of three plant preparations that are made from Thymus gobicus Tczern, Thermopsis lanceolata L, Glycyrrhiza uralensis Fisch and Vaccinium Vitis idea/, plants that are common in our country. Materials and Methods:The research was conducted in 2013-2014 at the Pharmacological Laboratory of the Drug Research Institute. The experiment was carried out on four groups of 20 guinea weighing 300-400 grams and the experimental condition of coughing was generated using the method of Ucelay et al. Result:The results of the study show that the combination 3 (Thymus gobicus Tczern, Thermopsis lanceolata L, Glycyrrhiza uralensis Fisc, Vaccinium Vitis idea) had suppressed the most when compared to the other combinations.