Sanskrit Verse
त्रिधा विपाको द्रव्यस्य स्वाद्वम्लकटुकात्मकः।
— (Ashtanga Hrudayam, Sutrasthana 9/20)
Explanation
Vipaka is the post-digestive effect of a substance, which occurs after it has been fully metabolized by Agni. While there are six tastes (Rasas), there are only three Vipakas: Madhura (Sweet), Amla (Sour), and Katu (Pungent). Sweet and Salty tastes generally have a Madhura Vipaka. Sour taste has an Amla Vipaka. Pungent, Bitter, and Astringent tastes generally have a Katu Vipaka.
Clinical Importance
Vipaka has a long-term, systemic effect on the body and the Doshas. It is more subtle and powerful than Rasa and Virya. For example, milk is sweet (Madhura Rasa) and cooling (Sheeta Virya), but its final effect is also sweet (Madhura Vipaka), making it highly nourishing.