Kshar Sutra Chikitsa
A medicated thread is passed through a fistula tract and tightened in stages until the tract closes on its own.

Kshar Sutra preparation and coating

Nasagata Kshar Karma procedure

Kshar Karma OT setup
What happens
- A specially prepared thread, coated repeatedly in herbal alkaline pastes, is ligated through the fistula tract.
- It is changed and re-tied every 7–10 days, tightening a little further each time.
- The tract closes gradually from the inside out in approximately 4–8 sittings, without a large surgical cut.
How it helps
- The thread's coating has a mild cutting and healing action, so it heals the tract as it slowly cuts through it.
- Because the closure happens gradually, the surrounding sphincter muscle is not cut all at once — which is why control of the bowel is preserved.
- The wound stays open and draining throughout, so infection has nowhere to collect.
- This is one of the most researched Ayurvedic procedures, published and compared against conventional fistula surgery in Indian medical literature.
- Setting
- Shalya OT, day-care
- Sittings
- ≈ 4–8, every 7–10 days
- Anaesthesia
- Local / spinal
- Recovery
- Recovery Time depends on length of Track and Type of finds.
Indicated for
- Fistula-in-ano (all types)
- Recurrent fistula after prior surgery
- Pilonidal sinus
- Non-healing anal sinus










