Introduction - Medicinal plants, as well poisonous have different alkaloid compositions in every season. According to the traditional texts of Ayurveda, Visha Dravya greater potency Varsha Ritu, which reduces due Agasti rising Sharad Ritu. Objective To evaluate and Ritu through estimation concentration Strychnine Strychnos nux- vomica L. Materials Methods – Quantitative analysis by HPTLC. Resul...