Oseltamivir remains the drug of first choice recommended by WHO.

奥司他韦仍然是世卫组织推荐的首选药物。

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We suggested that prazosin Co might be an effective drug of first choice for chronic hypertensive patients.

所以，复方哌唑嗪可作为肾性高血压和原发性高血压患者的首选降压药物。

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BACKGROUND: Carbamazepine is widely accepted as a drug of first choice for patients with partial onset seizures.

背景：卡马西平是部分性癫痫发作的首选药，这点已被普遍接受。

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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'