To begin with the extraction, the cannabis indica leaves were harvested, sorted, dried, and ground with a lot of attention. The quality indices were measured with the help of analytical grade reagents and solvents. The aqueous method of extraction was employed for the tetrahydrocannabinol (THC oil, ∆9-THC) and in this case treatment was done through a lot of filtration and boiling in order to get better yields. The sample of Cannabis indica comprises of numerous phytochemicals but the but its foremost components are THC, CBD and THCV demonstrating the retention time for GC 37.7-39.5 minutes, 35.6-36.3 and 33.7-34.5 minutes. ) also showed same results.