Doctors are free to prescribe drugs for USES that have not been approved, but drug companies are prohibited by law from marketing drugs for these so-called "off-label" USES.

医生有处方药物使用于未批准用途的自由，但是法律禁止制药公司销售药品用于标签外的用途。

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Doctors are permitted to try off-label uses to treat their patients.

VOA: special.2009.09.11

That could make it easier for doctors to get data about so-called off-label uses for a drug.

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In the marketing of Xyrem, Orphan Medical pushed off-label uses for which there was no scientific support.

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It says there is no evidence supporting the drug in off-label uses, such as in sicker or healthier patients.

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