Vasti is an important Panchakarma therapy in Ayurveda, the tradtional medical system of India. It is a treatment involving the introduction of herbal oils and decoctions into the colon through the rectum.

In Ayurvedic medical system it is believed that the position of Vata humour, which affects the power of mobility, is in the colon. Any disruption of this humour affects the other two humours, ie, Pitta and Kapha.

Vasti in Sanskrit means bladder. Traditionally, a special device consisting of a tube and a bladder had been used to administer the medicine in this treatment. Now, modern enema equipments are mostly used.

Herbal decoctions are used in Nirooha or Asthapana Vasti and in Anuvasana or Sneha Vasti makes use of mediated oils. The Vasti fluids are allowed to remain in the colon for a specific period of time for proper absorption. When it is expelled, toxins from the Dhatus are expelled along with the faecal matter.

One or two hours before noon is the best time to perform Vasti. It should not be performed soon after having food. Patients suffering from diarrhea, piles, diabetes and asthma are not recommended for Vasti.

Urovasti is recommended to treat pains affecting the sternum in the Uras (chest) area. A reservoir is built on the chest with black gram. Medical oil is poured into it and retained for a short time.