The drug most likely to prove beneficial to her is lithium.
Lethargy refers to the situation in which a person is very lazy and ignorant and low energy. The person is less enthusiastic and less energetic about the things.
According to the above situation, Journalist Edith fluctuates between intense melancholy and sluggishness and tremendous elation and hyperactivity.
The medicine that Edith is required to take is lithium in order to improve his condition.
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