Pseudoephedrine (Sudafed) has been ordered as a nasal decongestant. Which of the following is a possible side effect of this drug?
A. Constipation
B. Bradycardia
C. Diplopia
D. Restlessness
Correct Answer: D. Restlessness
Side effects of pseudoephedrine are experienced primarily in the cardiovascular system and through sympathetic effects on the CNS. The most common CNS effects include restlessness, dizziness, tension, anxiety, insomnia, and weakness. Common cardiovascular side effects include tachycardia, hypertension, palpitations, and arrhythmias.
Option A: Pseudoephedrine is used to relieve nasal congestion caused by colds, allergies, and hay fever. It is also used to temporarily relieve sinus congestion and pressure. Pseudoephedrine will relieve symptoms but will not treat the cause of the symptoms or speed recovery. Pseudoephedrine is in a class of medications called nasal decongestants. It works by causing narrowing of the blood vessels in the nasal passages.
Option B: Tachycardia, not bradycardia, is a side effect of pseudoephedrine. Nonprescription cough and cold combination products, including products that contain pseudoephedrine, can cause serious side effects or death in young children. Do not give nonprescription pseudoephedrine products to children younger than 4 years of age.
Option C: Diplopia is not a side effect of pseudoephedrine. Tell your doctor if you have or have ever had high blood pressure, glaucoma (a condition in which increased pressure in the eye can lead to gradual loss of vision), diabetes, difficulty urinating (due to an enlarged prostate gland), or thyroid or heart disease. If you plan to take the 24-hour extended-release tablets, tell your doctor if you have had a narrowing or blockage of your digestive system.
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