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शुक्रहा बद्धविण्मूत्रो विपाको वातलः कटुः। मधुरः सृष्टविण्मूत्रो विपाकः कफशुक्रलः ॥६१॥
Katu vipaka impairs shukra(semen), obstructs (excretion of) faeces and urine and aggravates vata. Madhura vipaka helps excretion of urine and faeces from the body, increases kapha and semen.
english translation
पित्तकृत् सृष्टविण्मूत्रः पाकोऽम्लः शुक्रनाशनः। तेषां गुरुः स्यान्मधुरः कटुकाम्लावतोऽन्यथा ॥६२॥
Amla vipaka aggravates pitta, helps excretion of faeces and urine and damages semen. Amongst them, madhura vipaka is guru (heavy) and the other two (katu and amla) vipakas are laghu.
english translation
विपाकलक्षणस्याल्पमध्यभूयिष्ठतां प्रति। द्रव्याणां गुणवैशेष्यात्तत्र तत्रोपलक्षयेत् ॥६३॥
According to variations in guna (properties) there is also variation in degree (lowest, medium and highest) of vipaka.
english translation
मृदुतीक्ष्णगुरुलघुस्निग्धरूक्षोष्णशीतलम्। वीर्यमष्टविधं केचित्, केचिद्द्विविधमास्थिताः ॥६४॥
Some hold that there is eight-fold veerya: mridu (soft), tikshna (sharp), guru (heavy), laghu (light), snigdha (unctuous), ruksha (rough), ushna (hot) and sheeta (cold) while some opine that there are only two veeryas : sheeta (cold) and ushna (hot).
english translation
शीतोष्णमिति, वीर्यं तु क्रियते येन या क्रिया। नावीर्यं कुरुते किञ्चित् सर्वा वीर्यकृता क्रिया ॥६५॥
In fact, veerya (potency) is that which is responsible for each and every action. The substance can exert no action in absence of veerya and as such (it is concluded that) all actions are exerted due to veerya.
english translation