Aim And Objective: This study aimed to investigate the physicochemical properties and phytochemical composition of siddha formulation thoothuvalaiyathi chooranam. Materials And Methods: Thoothuvalaiyathi Chooranam is one Of the Siddha formulation chosen from Sarabenthira vaithya muraigal kasa swasa sikichai , Page No. 153 which is indicated for Eraippu ,Kasam ,swasam, kabarogangkal. The drug prepared as per the Siddha literature. The drug is subjected to physico chemical analysis such as loss on ignition, loss on drying, water soluble ash etc and phytochemical analysis as per the PLIM guidelines. Results And Conclusion: Phytochemical analysis of this drug was done such as pH (7.10), Loss on ignition (92.10%), Acid Insoluble ash (5.10±0.100), Water soluble extractive (9.30±0.500), Alcohol soluble extractive (8.10±0.200),Loss on drying (0.90±0.500) .The results revealed the presence of various bioactive compounds, including Alkaloids, Carbohydrates, Glycosides, Saponins, Phenols, Triterpenoids, Flavanoids, Proteins and amino acids, Anthocyanin , Tannins.The results indicate the standard quality ,safety and standardization for their use.