Some Potential Side Effects
For metronidazole and tinidazole: Infections caused by certain protozoa such as Trichomonas vaginalis Trichomonas Vaginitis Trichomonas vaginitis is a vaginal infection due to the protozoa Trichomonas vaginalis. Trichomonas vaginitis is usually sexually transmitted. It can cause a green or yellow... read more , Entamoeba histolytica Amebiasis Amebiasis is an infection of the large intestine and sometimes the liver and other organs that is caused by the single-celled protozoan parasite Entamoeba histolytica, an ameba. The amebas... read more , and Giardia lamblia Giardiasis Giardiasis is an infection of the small intestine caused by the single-celled protozoan parasite Giardia. The main symptoms are abdominal cramping and diarrhea. People may have abdominal... read more , and for bacterial vaginosis Bacterial Vaginosis (BV) Bacterial vaginosis is a vaginal infection that occurs when the balance of bacteria in the vagina is altered. Women who have a sexually transmitted infection, who have several sex partners,... read more
For metronidazole: Pelvic and abdominal bacterial infections
Numbness and tingling in the hands and feet (peripheral neuropathy)
* These side effects occur especially if the drugs are taken with alcohol.