The combination of Norfloxacin 100mg and Tinidazole 75mg is used to treat various bacterial and parasitic infections, particularly those affecting the gastrointestinal and urogenital tracts.

Norfloxacin (100mg) is a fluoroquinolone antibiotic that works by inhibiting the enzymes responsible for bacterial DNA replication, thereby preventing bacterial growth and spread. It is commonly used to treat urinary tract infections (UTIs), some types of gastrointestinal infections, and certain sexually transmitted infections (like gonorrhea).

Tinidazole (75mg) is an antiprotozoal and antimicrobial agent that is effective against anaerobic bacterial infections and protozoal infections. It is used to treat conditions like amoebiasis, giardiasis, trichomoniasis, and certain other infections caused by anaerobic bacteria.

This combination is particularly effective in treating mixed infections involving both aerobic and anaerobic pathogens, such as in cases of gastrointestinal infections, pelvic infections, or some urogenital infections. Norfloxacin targets aerobic bacteria, while Tinidazole treats anaerobic bacteria and protozoal infections.