A nurse is providing patient education about pseudoephedrine. Which information about this medication should the nurse include in the patient education?

A. Using this medication longer than 7 days may cause rebound congestion: Pseudoephedrine is a systemic sympathomimetic that stimulates alpha-adrenergic receptors, leading to vasoconstriction of nasal mucosal blood vessels and reduced edema. Prolonged use of decongestants can result in rebound nasal congestion due to compensatory vasodilation and receptor downregulation. B. Report changes in vision to your provider: Visual changes are not a common adverse effect of pseudoephedrine. The medication primarily exerts cardiovascular and central nervous system stimulation, potentially causing insomnia, nervousness, or increased blood pressure. Routine visual disturbances are not expected. C. This medication may cause sedation: Pseudoephedrine is a central nervous system stimulant rather than a depressant. It increases norepinephrine release, which may lead to restlessness, insomnia, tachycardia, or irritability. Sedation is more commonly associated with first-generation antihistamines, not systemic decongestants. D. Take this medication on an empty stomach to improve absorption: Pseudoephedrine can be taken with or without food, and food does not significantly impair its absorption. Taking it with food may help reduce mild gastrointestinal discomfort in some individuals. There is no clinical requirement to administer it on an empty stomach to enhance therapeutic effectiveness.