In the second trial, children with PDD and hyperactivity were treated with the stimulant methylphenidate, which is commonly used to treat attention deficit hyperactivity disorder.
第二个试验pdd和多动症儿童以兴奋剂methylphenidate，这一般用作注意缺陷多动症的治疗方式。
That is the lesson from medicines such as Ritalin (methylphenidate) and Provigil (modafinil), which are now widely used “off label” to boost performance, as Nature has found.
这是我们从利他林（Ritalin）和Provigil这类药物中学到的教训，现在这些药物都在标示核准之外的范围用于增强功能，这正是《自然》发现的。
Methods: the first derivation spectrophotometry method was used to determine the content and content uniformity of methylphenidate hydrochloride tablets with the solvent of water.
方法：以水为溶媒用一阶导数光谱法测定盐酸哌甲酯片的含量及含量均匀度。
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