Hypnotic is the choice drug which etiologically and semeiologically treats insomnia.

催眠药物是对失眠症进行对因和对症治疗的首选药物。

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Granisetron is a good choice drug in the prevention of chemotherapy induced nausea and vomiting.

格拉司琼可作为预防化疗引起的恶心、呕吐的优选药物。

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At present, it is the first choice drug for the treatment of schistosomiasis in the world because of the excellent efficacy, short course of treatment and low toxicity.

因其具有疗效高、疗程短、毒性小等优点，目前是世界上治疗血吸虫病的首选药物。

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Two trials, published in the Lancet medical journal, compared the effectiveness of alemtuzumab with a first-choice drug, interferon beta-1a.

BBC: Multiple sclerosis: New drug 'most effective'

He said he thought the drug would be most useful for patients for whom standard treatment had failed and in a "minority" of patients as a first-choice drug.

BBC: Multiple sclerosis: New drug 'most effective'

But as the Mexican cartels face new obstacles from law enforcement, local drug lords are now positioning themselves more strongly in Central America as shipments via land have become their primary choice of drug distribution.

CENTERFORSECURITYPOLICY: A Growing interdependence