Veerya means dynamic property of a substance which brings about the action.
“Veeravikrantaudhatu” The potency or strength of drugs to perform the action is called as veerya.Synonems of veerya is manliness, valor, strength, power, energy, heroism, vigor, virility, efficacy Veerya(potency) is characterized by a Karma (drug action) .
The drugs which efficiently act on Dosha, Dhatu and Mala at a particular time become ineffective after sometimes. Because the potency of drugs lost after certain period of time.Hence in Samhita Use of fresh dravyas are recommended other than old one.
Karma (drug action) is a resultant performance of the drug. To initiative any desire action of drug potency is needed.
The term veerya(potency) signifies the shakti (energy), or utsaha( active participation) and the properties like snigdha(unctuousness), ruksha (dry) etc., possessed by the drug, thus indicating that veerya (potency) is a physical as well as biochemical energy in the drug responsible for the action of the drug and its effectiveness in the body.
Types of Veerya
Veeryas are mainly divided into two types based on Charaka Samhita and Vagbhatta Samhita (Ashtangahridayam). i.e.,
Caraka has accepted two types: Usna(hot) and sita (cold)
Sushruta accepts eight guna (snighda, ruksa, usna, sita, mrdu, tikshna, visada, and pichila).
⇒ Astavidha Veerya (8 types of Veerya)- Guru, Laghu, Sheeta, Ushna, Snigdha, Ruksha, Mridu, Tikshna ⇒ Dvividha Veerya (2 types of Veerya)- Sheeta, Ushna
According to some Acharyas, Vishada replaces the Lagu, and Pichchhila replaces Guru Veerya.
Dvividha Veerya and Mahabhoota,karma/effect on dosha
|Veerya||Mahaboota||Karma||Karma on Dosha|
|Sheeta||Prithvi+Jala||Pleasurable,stabilizing,cleaning,life giving||Pitta shamaka,kapha-vata vardhaka|
|Ushna||Agni||Burning ,faintaing,loss of senses,sweating,emesis,purgation||Vata-kapha shamaka,pittavardhaka|
Asthavidha Veerya and its Mahaboota,Karma/effect on dosha
|Veerya||Mahabhoota||Karma||Effect on dosha|
|Sheeta||Prithi+jala||Pleasurable ,stabilizing,cleaning,life giving,heavy||Pitta shamaka,kapha-vata vardhaka|
|Ushna||Agni||Burning, digestion, fainting, loss of senses, sweating and emesis||Vata- Kapha shamaka, Pitta vardhaka|
|Snigdha||Jala||Snehana, restorative, anti aging, aphrodisiac||vatahara|
|Ruksha||Vayu||Constipative, drying, heating, painful||Constipative, drying, heating, painful|
|Guru||Agni+Vayu||Applicative, promotive, aphrodisiac||Vatahara|
|Laghu||Agni+Vayu||Scrapping, absorption, drying, healing||Kaphahara|
|Mridu||Jala+Akasha||Blood & muscle promoting||Pitta shamaka|
|Tikshna||Agni||Collective, aspiration, drying, oozing||Kaphahara|
Rasa and Veerya Relationship-
Commonly ,Dravyas with Madhura, Tikta, Kashaya rasas are Sheeta Veerya pradhan While dravyas with Amla, Lavana and Katu rasa, are Ushna Veerya.
But there are some exception for this rules.
Importance of Veerya
Among the Rasa,virya,vipaka, the Veerya is predominant because the action of Dravya is brought by veerya only. For Chikitsa ,dravyas with Predominance of Veerya (veeryapradhana) are used.
Action of Dravya is due to Veerya. Veerya supersedes Rasa, Vipaka and Guna, therefore even when Rasa, Vipaka and Guna of a Dravya act in accordance with each other. Veerya brings about total action difference.