Vamana/Emesis is the removal of doshas, which are harmful to your body due to their vitiated state through the mouth.
Now You may ask, When or rather, in which conditions should I go for Vamana Therapy?
Vaman is indicated in the following ailments According to acharya vagbhatta;
1. Navajwara (acute fever)
2. Atisara (diarrhoea)
3. Adhogata raktapitta (bleeding from lower orifices)
4. Rajayakshma (tuberculosis)
5. Kustha (skin diseases)
6. Meha (diabetes)
7. Apaci (goitre)
8. Granthi (tumor)
9. Slipada (filariasis)
10. Unmada (insanity)
11. Kasa (cough)
12. Shwasa (dyspnoea)
13. Hrllasa (nausea)
14. Visarpa (herpes)
15. Stanya dosha (vitiated breastmilk)
16. Urdhwaroga (E.N.T. & eyedisorders)
Other conditions where Vamana is highly proficient are: dyspepsia, hypothyroidism
PCOS, Type 2 diabetes, hypercholemia, dyslipidaemia, respiratory allergy, bronchial asthma, psoriasis, acute vulgaris, dandruff, urticaria, post viral arthritis due to dengue fever and chicken gunia, Hyperacidity etc..
All in all, we can now say that Vamana mainly acts on rasavaha, annavaha, pranavaha, medovaha and mamsavaha srotas among all the srotas.