Kalarchikkai is a small creeper plant grows in roadside fencings and other trees. Its fruit is called as Kalarchikkai or Bonduc Nut. These fruits are collected, dried well and available online as raw material.

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 other herbs and foods to avoid if any, upon consuming the herbs.