Indian literatures mention the use of plants in the treatment of various human ailments. Leaf, flower, fruit, bark root or pltablant as whole been claimed to possess medicinal properties. Though ample literature on therapeutic application of medicinal plants is available but data on the proximate composition of medicinal plants is very scarce. The study was undertaken to investigate the compositions of some common medicinal plants. The medicinal plant samples (seeds/steams/leaves) were analyzed for crude fiber, fat, moisture, protein, acid soluble and total ash content. The energy content of the samples was obtained using Atwater factors. The obtained data were evaluated using multivariate methods: Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA).