Flagyl is a brand-name prescription antimicrobial used to treat bacterial infections of the heart, blood, nervous system, gastrointestinal (GI) tract, lungs, joints, bones, and skin. Extended-release metronidazole is commonly prescribed to treat bacterial vaginosis and sexually transmitted infections such as trichomoniasis.
As an antimicrobial, Flagyl cannot be used to treat viral infections. If Flagyl is being used to treat a sexually transmitted infection (like trichomoniasis), both sex partners should use the medication simultaneously. This helps reduce the risk of reinfection in either partner. Antimicrobials stop the growth of harmful microorganisms in the body, so simultaneous use in both partners of metronidazole will help prevent the infection from living on and being passed between partners.
Flagyl is supplied as an oral tablet or extended-release capsule. It contains the drug metronidazole, which is available in generic form. Flagyl is only available via prescription from a licensed healthcare provider.