What side effect should a client expect while taking phenazopyridine hydrochloride for a urinary tract infection?

Phenazopyridine hydrochloride is an analgesic specifically used for providing relief from the pain, burning, urinary urgency, and frequency associated with urinary tract infections. A common and well-known side effect of phenazopyridine is the discoloration of urine. This medication can change the urine color to a vibrant orange or reddish hue, which is often alarming to patients but is a harmless effect. It is important to inform patients about this side effect so they can understand that the change in urine color is expected and not indicative of any additional health issue.

The other potential side effects listed, such as constipation, difficulty sleeping, or dry mouth, are not commonly associated with phenazopyridine and therefore would not be anticipated by the client. Highlighting the expected side effect of urine discoloration helps in managing the patient's expectations and promoting adherence to therapy while reducing anxiety related to unexpected changes in their condition.