Dravyaguna Vigyana
The Science of Ayurvedic Pharmacology
Master Rasapanchaka, Prabhava, classical exceptions & advanced therapeutic applications through 50 challenging MCQs with detailed explanations.
What is Dravyaguna Vigyana? Complete Guide
Dravyaguna Vigyana is the core branch of Ayurvedic pharmacology that every serious BAMS and competitive exam aspirant must master. Dravyaguna Vigyana (द्रव्यगुण विज्ञान) systematically studies the properties (guna) and therapeutic actions (karma) of medicinal substances (dravya). It serves as the Ayurvedic equivalent of modern pharmacology, built on the foundation of Panchamahabhuta and Tridosha theory.
Acharya Charaka defined Ayurveda itself as the science dealing with Dravyaguna and Karma. This comprehensive Dravyaguna Vigyana resource on CrackTarget includes complete concept notes and 50 hard level MCQs to help you excel in BAMS, BPSC, and UPSC EPFO exams.
Dravyaguna Vigyana: The science of Ayurvedic medicinal substances
Scope
- Identification & classification of dravyas
- Study of Rasa, Guna, Virya, Vipaka, Prabhava
- Therapeutic applications & formulations
- Incompatibility, toxicity & dosage
Classical Basis
Rooted in Charaka Samhita, Sushruta Samhita, Ashtanga Hridaya & later Nighantus. Learn more about classical Ayurvedic texts in our BAMS study material. Narahari (17th century) established Dravyaguna Vigyana as a distinct specialty. External reference: EasyAyurveda.
Core Principle
“Dravyam guna karmatmakam” — The substance (dravya) is the substratum in which qualities (guna) and actions (karma) inherently reside through samavaya sambandha (inseparable relation).
Dravyaguna Vigyana – Rasapanchaka Explained
The five fundamental attributes that form the backbone of Dravyaguna Vigyana and determine the action of every medicinal substance
Rasa
Taste / Perceived directly
Six primary tastes arising from panchabhoutika composition (mainly Jala + Prithvi dominance).
Guna
Qualities / Properties
41 total gunas. Most important for Dravyaguna are the 20 Gurvadi Gunas (10 pairs of opposites) and 10 Paradi Gunas (for rational therapeutics).
Virya
Potency / Power
The active shakti or potency that actually executes the pharmacological action. Primarily classified as Ushna (hot) or Sheeta (cold).
Vipaka
Post-digestive effect
The final transformed state of the dravya after digestion and metabolism by Agni. Determines the ultimate long-term effect on doshas, dhatus and malas.
Prabhava
Specific / Unique Action
The inexplicable or specific potency that produces an action not explainable by Rasa, Guna, Virya or Vipaka alone. It is considered supreme.
Danti & Chitraka have identical Rasa (Katu), Virya (Ushna), Vipaka (Katu) yet Danti is a powerful purgative due to its Prabhava.
Classification of Dravyas
By Origin (Yoni)
Classical Groupings
- Charaka: 50 Mahakashayas (groups based on primary action e.g. Jwaraghna, Shothahara, Rasayana)
- Sushruta: 37 Ganas based on therapeutic effect
- Vagbhata: Detailed ganas in Ashtanga Hridaya
- Nighantus: Varga classification (e.g. Guduchyadi, Haritakyadi)
Iconic Dravyas & Their Pancha Rasa Guna Profile
Quick reference for high-yield drugs frequently asked in exams
| Dravya | Rasa | Guna | Virya | Vipaka | Key Prabhava / Karma | Dosha Action |
|---|---|---|---|---|---|---|
| Ashwagandha | Tikta, Katu, Madhura | Laghu, Snigdha | Ushna | Madhura | Rasayana, Balya, Vajikarana, Medhya | Vata-Kapha ↓ |
| Shatavari | Madhura, Tikta | Guru, Snigdha | Sheeta | Madhura | Stanya janana, Rasayana, Shukrala | Pitta-Vata ↓ |
| Haritaki | Pancha-rasa (except Lavana) | Laghu, Ruksha | Ushna | Madhura | Tridosha hara, Anulomana, Rasayana | All three ↓ (esp Vata) |
| Amalaki (Amla) | Amla, Madhura, Kashaya, Tikta, Katu | Guru, Ruksha, Sheeta | Sheeta | Madhura | Rasayana, Chakshushya, Tridosha hara | Pitta ↓ primarily |
| Guduchi (Giloy) | Tikta, Katu | Guru, Snigdha | Ushna | Madhura | Amrita (Prabhava), Jwaraghna, Rasayana | Tridosha ↓ |
| Haridra (Turmeric) | Katu, Tikta | Ruksha, Laghu | Ushna | Katu | Varnya, Shothahara, Pramehaghna | Kapha-Pitta ↓ |
| Shunthi (Ginger) | Katu | Laghu, Snigdha, Tikshna | Ushna | Madhura (Exception) | Deepana, Pachana, Shoolahara | Kapha-Vata ↓ |
| Danti | Katu | Tikshna, Ruksha | Ushna | Katu | Strong Virechana (Prabhava) | Kapha-Pitta ↓ |
Note: Properties may vary slightly according to different classical texts and part used (root, fruit, etc.). Always refer to primary sources for clinical application.
Dravyaguna Vigyana Hard Level MCQs (50 Questions)
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