Nilavarai Usage: For strengthening all organs in body and Constipation Control. Take and Boil 2-3 gm of Nilavarai powder with 150ml of Water for 4-5 minutes. Filter and serve. Add Palm sugar or 1 spoon honey enhance the taste, early in morning on empty stomach.. Nilavarai is good for Body and Hair. Removes joint pain. Cures constipation & make physically active. Take 1-1.5gm of powder & mix it with lukewarm water (or with honey) and have it once a day. Nilavarai powder is a hot and sour drink with the distinctive sweet and sour taste of senna leaves.