BackgroundPrediabetes is a condition before manifestation of diabetes. It is associated with biochemical change in body due to disturbances in food habits, sleep patterns and sedentary lifestyle. Conventional system of medicine has limitations, however Ayurvedic medicines can be effective for management of this condition. ObjectiveTo compare the efficacy of Vamana Karma (∼therapeutic emesis) followed by Darvyadi Kwatha (∼herbal decoction) with that of oral medication of Darvyadi Kwatha with lifestyle modification in reducing HbA1c of the prediabetic participants. MethodologyAfter approval of IEC and registration under clinical trial registry of India, 40 patients were registered in two groups suffering from prediabetes in the trial. The primary criteria were HBA1c, FBS & PPBS along with secondary criterias like Agnibala (∼strength of digestion and metabolism), Dehabala (physical strength) and Satvabala (mental strength) relief in signs & symptoms of Prameha and quality of life (SF-36 Score). ResultsStatistically significant results were observed in both the parameters: (primary & secondary) within the group [VM group (HbA1c (<0.001), FBS (<0.001) & PPBS (<0.001) and SM group (HbA1c (<0.001), FBS (<0.001) & PPBS (<0.001)] and between the group [HbA1c (P < 0.01), FBS (P < 0.01), SF-36 score (P < 0.001) as well. ConclusionThe present clinical study suggests that there is significant improvement between the groups. On comparision, it was found that treating prediabete.s Shodhana was more safe & effective than Shamana.