Find patient medical information for Metronidazole (Flagyl, Likmez) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Metronidazole is an antibiotic used to fight bacteria in your body. Learn about side effects, interactions and indications. Flagyl (Metronidazole) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Description Metronidazole is used to treat bacterial infections in different areas of the body. It is also used to treat infections caused by protozoa (eg, trichomoniasis and amebiasis) and infections caused by bacteria that do not need oxygen to survive. The extended-release tablets are used to treat women with vaginal infections (bacterial vaginosis). Metronidazole belongs to the class of. Metronidazole, sold under the brand name Flagyl and Metrogyl among others, is an antibiotic and antiprotozoal medication. [10] It is used either alone or with other antibiotics to treat pelvic inflammatory disease, endocarditis, and bacterial vaginosis. [10] It is effective for dracunculiasis, giardiasis, trichomoniasis, and amebiasis. [10] Flagyl (metronidazole) is used for certain infections. A typical Flagyl dosage is 500 mg 4 times daily, though it varies depending on the condition being treated and other factors. FLAGYL® (metronidazole) tablets To reduce the development of drug-resistant bacteria and maintain the effectiveness of FLAGYL® and other antibacterial drugs, FLAGYL® should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. Medscape - Amebiasis-specific dosing for Flagyl, Flagyl ER (metronidazole), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Flagyl is used to treat bacterial infections of the vagina, stomach, skin and joints. Learn about side effects, interactions and indications. Flagyl (metronidazole) uses, dosage, side effects & the alcohol truth. 2026 expert guide. Everything your doctor didn't explain — before your first dose.