A client taking nitrofurantoin for a urinary tract infection should be advised about which common side effect?

Clients taking nitrofurantoin for urinary tract infections often experience gastrointestinal side effects, with nausea and vomiting being among the most common. This medication can irritate the stomach lining, contributing to feelings of nausea and resulting in vomiting in some patients. It's important for patients to be aware of this potential side effect so they can take measures, such as taking the medication with food, to help minimize discomfort.

While dry mouth, insomnia, and increased appetite might be experienced by some individuals on different medications, they are not typical or common side effects associated with nitrofurantoin. Recognizing the more prevalent side effects, like nausea and vomiting, helps in managing expectations and improving adherence to the medication regimen.