A 25 year-old male comes to your urgent care center and reports that he has been feeling intense fear that something terrible is about to happen, worrying about losing control of his life, spending sleepless nights fearing he might go crazy, feeling as if he is choking and feeling a sense of impending doom. He insists that his symptoms are not ‘just mental’. He reports he has a pounding heart, upset stomach, diarrhea, shaking, sweating, numbness and tingling in his arms and legs.He has had 5 or 6 episodes of fear attacks in the last two months. He denies any alcohol or substance use. His medical history is unremarkable for medical and mental health histories. Suspecting drug abuse, you ordered a random urine drug screen, which came negative on a 12 panel test. When you ask him to stand during a physical examination, he reports feeling dizzy and lighthearted. When you are planning to order some laboratory tests, he reports that his family doctor checked him for a lot of things to rule out heart disease, gastrointestinal disease and neurological disease and ‘all those tests showed nothing abnormal’. Which of the following medications indicated in this patient for immediate relief of panic symptoms?