Based on available information, there isn't a single "main" side effect of Flagyl (metronidazole). Instead, it has several common side effects. Here's a breakdown:
Flagyl, an antibiotic, has a range of potential side effects. According to available data, some of the most frequently observed side effects include:
- Nausea
- Headaches
- Loss of appetite
- Vomiting
- Diarrhea
- Dry mouth
- Dark-colored urine
- Metallic taste in mouth
Other, less common, side effects include:
- Weight loss
- Constipation
- Vaginal dryness
- Serious side effects like brain disease, fevers, mouth sores, and painful urination.
Because there are many common side effects, it is impossible to say which is the main one.
