Sanskrit Verse
वीर्यं द्विविधं - उष्णं शीतं च।
— (Classical Interpretation)
Explanation
Virya is the potency or active energy of a substance, which determines its heating or cooling effect on the body. There are two primary types of Virya: Ushna (Heating) and Sheeta (Cooling). This property is more powerful than Rasa and determines the substance’s effect on metabolism and Pitta dosha.
Clinical Importance
Herbs are classified based on their Virya to treat conditions of excess heat or cold. For instance, cooling (Sheeta Virya) herbs like Sandalwood are used for Pitta conditions like burning sensations, while heating (Ushna Virya) herbs like Ginger are used for Kapha and Vata conditions like cold and congestion.