A client taking phenobarbital (Luminal) for seizure control asks the nurse how the prescription can control seizures. Which response should the nurse provide the client?
A. "Phenobarbital (Luminal) stops seizures by decreasing the calcium in the brain, which is responsible for the seizures."
B. "Phenobarbital (Luminal) stops seizures by increasing a chemical called glutamate that calms down the excitability in the brain."
C. "Phenobarbital (Luminal) stops seizures by decreasing the sodium in the brain, which is responsible for the seizures."
D. "Phenobarbital (Luminal) stops seizures by increasing a chemical called GABA that calms down the excitability in the brain."
Answer: D
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