ʻO Rifampicin (Rifaximin), kahi mea i loaʻa i ka rifamycin, na Alfa Italia i hoʻomohala. Ua kūʻai ʻia ma Italia ma ke ʻano he lāʻau kūpale anti-infectious i ka makahiki 1987 a hoʻohana mau ʻia ia ma nā ʻāina ʻē. Ua ʻae ʻia e SFDA i ka makahiki 2004, ua hoʻohana ʻia ia i nā hana hoʻokolohua ma Kina. ʻO ia kahi lāʻau semi-synthetic antibacterial o rifamycin. Loaʻa iā ia kahi laulā antibacterial ākea a me ka hana antibacterial ikaika. Hiki iā ia ke hana i kahi kiʻekiʻe o ke koko i loko o ka naʻau o ke kōpū. Hiki iā ia ke kāohi iā Staphylococcus aureus, Streptococcus faecalis a me Salmonella i nā aerobes gram-positive, i pili i ka genus Salmonella i ka bacteria bacteria aerobic Gram-maikaʻi. ʻO Shigella lāua ʻo Escherichia coli, ʻo Yersinia enterocolitica a me nā bacteria anaerobic Gram-positive a pau i ka hana antibacterial kiʻekiʻe. ʻO ke ʻano o kāna hana e kāohi i ka polymerase bacteria, pale i ke kaʻina transcription o RNA, a laila kaohi i ka synthesist o ka protein bacteria, no laila e hōʻemi ana i ka hana o ka amonia. 1) ikaika ka hana antibacterial, a ākea ka laulā antibacterial. Loaʻa iā ia ka hopena bactericidal ma ka hapanui o nā koʻohune gram-maikaʻi a me nā koʻohune gram-maikaʻi (me nā koʻohune aerobic a me nā koʻohune anaerobic), a ʻoi aku ka ikaika o ka hopena ma nā gram-positive bacteria ma mua o nā bacteria bacteria maikaʻi 2) ʻaʻole ia e omo ʻia e ka gastrointestinal tract, a kiʻekiʻe loa kona kuko i loko o ke kōpū Hiki iā ia ke pepehi i ka pathogen o ka naʻau a pāʻani i kahi hopena anti-bacterial wikiwiki i ka wahi kūloko, a ʻaʻole pono e hoʻohana i nā lāʻau antispasmodic a me adsorptive i hui pū ʻia me ka ʻōpū o nā ʻōpū.