The Client Is Prescribed Phenobarbital for Seizure Control

The client is prescribed phenobarbital for seizure control.The client asks the nurse how this little pill can stop seizures.What response by the nurse is the most appropriate?

A) The pill helps to decrease the calcium in your brain,which is responsible for your seizures."
B) This medication increases a chemical called GABA that calms down the excitability in your brain that causes your seizures."
C) Phenobarbital increases a chemical called glutamate,which calms down the excitability in your brain that causes your seizures."
D) It helps by decreasing the sodium in your brain,which is responsible for the seizures."