What are the common side effects of nitrofurantoin?

Common nitrofurantoin side effects include nausea, fatigue, and a loss of appetite. Less common nitrofurantoin side effects include dizziness, headache, and diarrhea. Hair loss is also possible. Rare but serious side effects include nerve pain, lung reactions, and liver problems. There’s a higher risk of serious side effects the longer you take nitrofurantoin. View original source