From Nparks Flora & Fauna Web: Plant believed to possess anti-microbial, insecticidal, anti-inflammatory and anti-cancer properties. Leaves boiled and made into a purple-coloured herbal tea to relieve body heatiness. Used in Thailand to treat fever, cough and bronchitis. Also used as remedy for amenorrhea, headache, sprains and rheumatism. Caution: Astringent sap may cause stinging and itching in susceptible individuals and animals. Do not eat plant raw, as sap can cause pain in mouth and throat.