NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is a common side effect of Dalfampridine (Ampyra)?

Neutropenia
Seizures
Hepatotoxicity
Injection Site Reactions

The correct answer is: Seizures

Dalfampridine (Ampyra) is a medication commonly used to improve walking in patients with multiple sclerosis (MS). One of the possible side effects of this medication is seizures. Seizures occur when there is abnormal electrical activity in the brain, leading to sudden changes in movement, behavior, and consciousness. The other options, neutropenia, hepatotoxicity, and injection site reactions, are not commonly associated with Dalfampridine and would not be expected as side effects of this medication. Neutropenia is a low level of a specific type of white blood cells which may result in a higher risk of infections. Hepatotoxicity refers to liver damage and may be caused by certain medications. Injection site reactions refer to skin reactions that may occur after an injection, such as redness, swelling, or pain. These side effects are not typically associated with Dalfampridine and would not be expected to occur with its use. Therefore, the correct answer is B, seizures.