Diabetes mellitus, a group of metabolic diseases characterized by hyperglycemia, is treated mainly with synthetic drugs which exert serious side effects when taken for a long time. These days dietary measures and traditional herbal therapy such as herbal preparations / agents are used as the preferred antidiabetic agents. Four plants, Cassia alata, Artocarpus heterophyllus, Costus pictus and Bauhinia purpurea Linn.and 3 combinations of plants are studied for their efficacy in antihyperglycemic activity of the extracts in diabetic rats, hypoglycemic activity, effect of the extracts on...