According to the Charaka school, the pentad of Panchakarma includes :
1. Vamana (emesis therapy)
2. Virechana (purgation therapy)
3. Nasya (nasal therapy)
4. Anuvasana Vasti (therapeutic enema with medicated oil)
5. Nirooha Vasti (enema with herbal decoction)
Considering that vitiation of the blood could also be a causative factor in certain diseases, the
Susruta school later combined the two main divisions of Vasti into one category and added Raktamokshana or the letting out of vitiated blood as the fifth division of Panchakarma.