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Dr. Jalpa Gandhi

VIRYA AND THE THERMAL AND METABOLIC EFFECTS OF MEDICINAL PLANTS: A CRITICAL REVIEW OF EXPERIMENTAL APPROACHES TO USHNA AND SHEETA POTENCY

Virya, usually translated as potency, is the property by which Ayurveda explains a drug’s main action. In the dominant two-fold scheme, drugs are eith...

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Tushar Tapadiya

VIPAKA AND GUT MICROBIAL BIOTRANSFORMATION OF PHYTOCONSTITUENTS: A CONCEPTUAL REVIEW AND EVIDENCE-BASED HYPOTHESES FOR TESTING THE POST-DIGESTIVE EFFECT OF AYURVEDIC DRUGS

Vipaka is the Ayurvedic concept of the post-digestive transformation of a substance. It is the change that occurs after the action of digestive fire,...

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Dr. Abhay Gandhi

PRABHAVA REVISITED: A CRITICAL REVIEW OF MODERN EXPLANATIONS FOR CLASSICAL EXAMPLES OF SPECIFIC ACTION IN DRAVYAGUNA

In Dravyaguna, prabhava is the specific action of a drug that cannot be predicted from its rasa, guna, virya and vipaka. Charaka illustrates it with p...

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Dr. Jalpa Gandhi

SANDIGDHA DRAVYA: A CRITICAL REVIEW OF BOTANICAL IDENTITY DISPUTES IN AYURVEDIC DRUGS AND THE METHODS USED TO RESOLVE THEM

Sandigdha dravya are Ayurvedic drugs whose botanical identity is disputed, either because classical descriptions are insufficient or because different...

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Tushar Tapadiya

PRATINIDHI DRAVYA: A CRITICAL REVIEW OF THE CLASSICAL RATIONALE FOR DRUG SUBSTITUTION AND THE PHYTOCHEMICAL AND PHARMACOLOGICAL EVIDENCE FOR EQUIVALENCE

Ayurvedic texts recognise that drugs may be unavailable and prescribe approved substitutes, pratinidhi or abhava pratinidhi dravya, to be used in thei...

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