That is the lesson from medicines such as Ritalin (methylphenidate) and Provigil (modafinil), which are now widely used “offlabel” to boost performance, as Nature has found.
In addition, WHO will assist in monitoring the use of unlicensed, off-label and unsafe medicines for children.
此外，世卫组织将协助监测未获使用许可的、脱离标签说明使用的和不安全的儿童药物。
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Most scientific experts consider this benefit "progression-free survival," sufficient for full approval, and many oncologists have been using Avastin as an "off-label" drug for this purpose.