Medicinal plants are invaluable sources for the discovery of novel molecules in scientific research. The accurate identification, authentication, and collection of these plants are imperative prerequisites for research endeavors. In this investigation, we procured and subjected four medicinal plants, namely Ocimum sanctum, Lawsonia alba, Trigonella foenum graecum, and Carissa carandus, to meticulous extraction and subsequent assessment of their physicochemical and phytochemical parameters. The physicochemical evaluation entailed determining the percentage of total ash, acid-insoluble ash, water-soluble ash, loss on drying, alcohol-soluble extractive value, and water-soluble extractive value to ascertain the purity and quality of the plant materials. Additionally, phytochemical screening was conducted on freshly prepared extracts to ascertain the presence of chemical constituents responsible for the identified pharmacological activities. The outcomes of this investigation shed light on the purity and quality of the plant drugs through physicochemical characterizationExtracts, Physicochemical, Phytochemical, Plant drug