My father, aged 75y, had to undergo a leg fracture surgery when a car hit him during evening walk. He has been taking Ambulax 0.25mg once a while to mitigate old age anxiety / stress. But, post this recent surgery & hospitalization, followed by an episode of lowering of electrolytes in hospital, and urology related issues too, high levels of anxiety & stress right from evening and through the entire night, are making him very restless & nervous. Can some anti depressent be given to him which can be stopped after few weeks of being restricted in the bed, and is non-addictive?