Which common side effect may occur with the use of nortriptyline?

Nortriptyline, a tricyclic antidepressant, is known to have several common side effects associated with its use, one of which is constipation. This side effect occurs due to the anticholinergic effects of the medication, which can slow down gastrointestinal motility and lead to difficulty in moving stool through the intestines.

Patients taking nortriptyline may experience reduced secretion of fluids and slowed peristalsis, both of which contribute to constipation. As a result, it is important for healthcare providers to monitor patients for this side effect and recommend appropriate interventions such as dietary changes, increased fluid intake, or the use of laxatives if necessary.

The other options listed do not typically align with the common side effects associated with nortriptyline. Increased energy levels would not be a direct effect of this medication, as it is primarily used to address symptoms of depression, which can initially cause fatigue. High blood pressure is not an effect directly linked to nortriptyline, as it more traditionally promotes side effects like sedation. Excessive sweating may occur in some patients, but it is not as frequent as gastrointestinal disturbances such as constipation.