Koshtam also called as Spiral Ginger in English available as raw material. It is having a strong odour which can drive away insects. It is been used by our ancestors for making Siddha and Ayurveda medicines. 

It can be used to treat Kustam and the related Skin diseases. It can also acts as a good Anti Venom especially for treating Insect Bites and Plant Venoms. 

Disclaimer: Before taking any herbal as an intake, you are requested to consult with a Siddha or Ayurveda Doctor or any other Traditional Siddha Physician to avoid further health related problems. They will help you to understand the procedure, the effect of Herbals and foods to avoid if any, upon consuming the herbs.