A 25-year-old man is admitted to a psychiatric hospital for the first time. Excited, he says quickly and loudly, actively gesturing. He jokes non-stop, laughs, never leaves his face smile. Talks to the doctor on "you", offers him to play cards, caresses nurses, invites them on a date. He says that he has not slept for the last 2 days, but not at all does not feel tired. Which drug should be used?