Siravyadhana is an Ayurvedic para-surgical procedure wherein Raktamokshana (bloodletting) is done through venipuncture - puncturing of veins using needles and other instruments to eliminate toxic materials from the blood of a patient. This form of bloodletting is highly beneficial in Vata diseases having severe pain like Vata rakta (gout); Kustha (leprosy and other skin diseases); Slipada (filariasis); Blood vitiated by poisons; Granthi (tumours); Arbuda (malignant tumour); Apachi (goiter); Yakrit Pleeha (diseases of liver and spleen); Visarpa (erysipelas); Vidradhi (abscess); Shiro Ruja (headache); Eye diseases like Glaucoma; and Inflammatory disorders of eyelids.
Raktamokshana by Siravyadha is considered to be the supreme as it drains out the vitiated rakta and cures the diseases. During Siravyadha a considerable amount of blood is drained (> 100 ml). This triggers the immediate haemo-dilution, and immunologic, inflammatory and trigger factors get released. Multiple intermediate metabolites, particles etc., embedded in the blood are reduced by Siravyadha.