The screening of cytotoxicity test for isolated compounds from this Piper species against four cancerous cell lines i.e. human breast carcinoma cell lines (MCF-7 and MDA-MB-231), human intestine epithelial cell line (HT-29) and human ovarian carcinoma cell line (SKOV-3), was carried out by Mr. Cheah Yew Hong from the Institute for Medical Research (IMR), Malaysia