Metrogel is good for a lot of things. Metrogel can be used for rosacea of course. Metrogel can be used for acne. Metrogel can also be used for vaginal infections. Metrogel contains metronidazole. Metronidazole is used in Metrogel Vaginal. Metronidazole is an antibiotic which is effective against parasites and anaerobic bacteria. Anaerobic bacteria can cause disease in the abdomen, liver, ovaries, and fallopian tubes. Inflammation of the vagina is caused by the parasite Trichomonas. Doctors usually diagnose this condition as vaginitis.
Metronidazole blocks some of the bacteria cells and parasites. Metronidazole is also used in treating infections of the colon. This drug is also used along with other drugs to treat stomach or intestinal ulcers. Metronidazole can be taken orally or administered intravenously. This drug is usually administered intravenously at the hospital. Metronidazole is an antibiotic and is generally well tolerated with correct use.
http://www.medicinenet.com/metronidazole/article.htm