VAMANA:

vamana is the unique procedure of eliminating the dosha from the body through the oral route by way of inducing vomiting. Kapha dosha, thew third among the three dosha os best eliminated by this procedure. The forcible expulsion of undigested pitha and kapha through the upper root is known as vamana by definition. To begin with the patient is treated with snehana and svedana procedures, and is followed by the induction of vomiting. The patient is then subjected to samsarjana karma to complete the procedure. The whole procedure including the preliminary as well as follow up procedure is called as vamana karma.
indications:

Inducing vomiting specially for kapha related illnesses like asthma

Coughs
Chronic colds
Psoriasis
Acne
Arthritis
Diabetes and other kapha disorders.

This is a painless, drug-induced emetic process. Vamana cleanses kapha collected in the body and decongests the respiratory tract.