Introduction: World Health Organisation promoting the application of traditional medicinal plant in the form of herbal formulation in various countries. Aim: The present investigation was focused on the development and stability study of polyherbal suspension produced from alcoholic extracts of selected medicinal plant. Methodology: Three suspensions Polyherbal formulation-A, Polyherbal formulation-B, Polyherbal formulation-C of different concentration of Sodium Carboxy Methyl Cellulose 0.7%, 1.4%, 2.0% respectively formulated and evaluated to accelerated stability for 3 months. Result: Polyherbal formulation-C exhibited pleasant appearance and texture; there were no changes in sedimentation, flow rate, pH, viscosity and other physiochemical parameters. Quality control parameters like phytochemical and High-Performance Thin Layer Chromatography were also done on the developed polyherbal formulation. It reveals the presence of various phytoconstituents. All the quality control parameters in formulated suspension are stable and acceptable. Conclusion: It is concluded that suspension of ethanolic extracts of Curcuma caesia, Citrullus lanatus, Evolvulus alsinoide, Gymnema sylvestre, Tinospora cordifolia, Caesalpinia bonduc, Withania coagulants formulated in combinational therapy could be effective and safe for use.