The fundamental concepts driving the Siddha form of medicine are quite similar to those of the Ayurvedic form of medicine. With the help of natural elements such as plants, minerals, and metals, this form of medicine is able to completely cure an ailing body, without any side effects.
According to the Siddha school of medicine, the universe is made up of two elements, Siva and Shakti. In other words, the universe comprises of matter and energy. Neither can exist without the other.