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Lithium is a medication used to treat bipolar disorder, primarily by preventing or reducing the severity of manic episodes. While its full mechanism is complex, a key action involves blocking the activity of norepinephrine, an excitatory neurotransmitter, at the synapses. This complements its other known effects, such as inhibiting the release of dopamine and glutamate and enhancing the function of the inhibitory neurotransmitter GABA.

Mechanism of Lithium in Treating Bipolar Disorder

A patient with bipolar disorder is experiencing a manic episode, characterized by high energy and euphoria. This condition is linked to excessive synaptic activity of the excitatory neurotransmitter norepinephrine. Given this information, which statement best analyzes how lithium would be an effective treatment?

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