Enterolok tablets is a combination of norfloxacin an anti microbial agent ( quinolone group ) and effective anti anerobic bactericidal agent (tinidazole). This combination shows a great efficacy and control against gastrointestinal infections due to susceptible organisms. Enterolok tablets have a bactericidal effect including anaerobes, Gram- negative and gram positive aerobics used for treatment and prevention of infections due to these organisms. *Dosage One tablet twice daily for 5 days. Indications treatment and prevention of enteric fever, gastrointestinal infections due to susceptible organisms salmonella typhi , paratyphi species , shigella species , campylobacter jejuni , pylori, enterotoxigenic E.coli. Diarrhea and dysentery. Treatment and prevention of infections due to gram � negative and several gram � positive aerobic organisms. Use of oral Norfloxacin-containing medicines in urinary infections restricted