Guna - Rasa - Virya - Vipaka - Prabhava Siddhanta

Guna -  Rasa - Virya - Vipaka - Prabhava Siddhanta :

These five important, active principles of drug substances are follows :

I) Rasa : Therapeutically active agent.

II) Guna : Best quality

III) Virya : An active principle

IV)  Vipaka : The end product of digestion.

V) Prabhava : Actual therapeutically activity of the drug in the individual  on the drug in the individual.

These five principles are the Panchsheel or five pillars of the Ayurvedic therapeutic.

Tridosha theory

Tridosha theory

Tridosha have three basic factors, like 
vata, 
pitta and
kapha.

The word 'Dosha' means impurities or imbalance of vata, pitta and kapha.
When these three factors are not in balance, it develops certain  diseases in the body.

I) Vata : It is made up of vayu and Akasha, which is characterized by mobility and lightness.

II) Pitta : This is developed  from Agni or fire, it has bright, hot and acidic character.

II) Kapha : Kapha dosha is made up of prithvi and Apa i.e. earth and water. It is watery and heavy in character.