A nurse is teaching a client who has a new prescription for doxepin. Which of the following instructions should the nurse include in the teaching?

A. "You may experience a decrease in your blood pressure while taking this medication.": Orthostatic hypotension is a possible side effect, but it's not as common or specific as sedation-related concerns for this medication. B. "You may experience weight loss while taking this medication.": Doxepin, a tricyclic antidepressant, is more commonly associated with weight gain due to increased appetite, not weight loss. C. "You may experience diarrhea while taking this medication.": Doxepin is more likely to cause constipation rather than diarrhea due to its anticholinergic effects. D. "You may experience insomnia if you take this medication later in the day.": Doxepin has sedative properties. Taking it late in the day can disrupt the natural sleep-wake cycle, paradoxically leading to sleep disturbances or difficulty initiating restful sleep.