即便在有药效的时候，药物也并不会对所有人有效。
The drugs don't work for everyone, even when they are effective.
这是因为一旦知道药效基因，药物化学家就可以修饰它，在保持药效的基础上减少毒性。
This is because once a pharmacophore is known, medicinal chemists can modify it to reduce toxicity while maintaining (or enhancing) potency.
当placebo首次在英语里露面的时候，它既不是指没有药效的药物，也丝毫没有愉悦的意思。
When placebo first made an appearance in English it didn’t refer to either the fake drug or some pleasing nature.
证明药理和药效的最好方法之一就是进行随机临床对照试验，在这个试验中其研究对象会被随机地分成两组。
One of the best ways scientists have to prove cause and effect in medicine is to conduct a randomized controlled trial, in which study subjects are randomly assigned to two groups.
在实验开始前一个小时，一半的受试者服用了20毫克皮质醇，另一半受试者服用的没有任何药效的安慰剂。
An hour before experiencing each fear-inducing situation, half of the participants took 20 milligrams of cortisol, while the other half took an inactive placebo.
这种药物有一个很大的限制因素，其药效只能持续6个小时。
This drug has one important limitation. Its effects only last six hours.
每一种药品均有链接，可获得有关药效和安全性的门诊证据、世卫组织或其他临床指南，以及价格信息。
For each medicine, there are links to clinical evidence about efficacy and safety, WHO or other clinical guidelines, and price information.
对药物的选择考虑到了患病率、安全性、药效以及相对成本效益。
They are selected with regard to disease prevalence, safety, efficacy, and comparative cost-effectiveness.
巴格列酮已经经过一系列临床前期药效药理学、安全药理学、药代动力学或毒性动力学和药物代谢研究的评估。
Balaglitazone has been evaluated in a series of preclinical efficacy pharmacology, safety pharmacology, pharmacokinetic/toxicokinetic, and drug metabolism studies.
这是因为这类试验主要关注测试药物的安全性而不是药效。
That is because such trials are concerned mainly with testing a drug’s safety, not its efficacy.
对药物的选择考虑到了患病率、药效证据、安全性以及相对成本效益。
They are selected with regard to disease prevalence, evidence of efficacy, safety, and comparative cost-effectiveness.
米切尔说，更关键的问题是病人每多等15分钟，药效就会减半。
More crucial: the effectiveness of the drugs is reduced by half every 15 minutes the patient is waiting, Mitchell said.
更糟糕的时，如果药效时间比飞行时间更长，你下飞机的时候会昏昏欲睡——如果还得开车或者坐车回家，就不太妙了。
Even worse, if the drug lasts longer than the flight, you'll arrive drowsy at your destination-that's not good if you have to drive or negotiate local transportation home.
它还概述了世卫组织为监测全球抗疟药效力和正在形成的耐药模式制定的新的标准化方法。
It also Outlines new standardized methods developed by WHO for monitoring antimalarial drug efficacy and emerging resistance patterns worldwide.
对《世卫组织基本药物标准清单》上所列药物的选择考虑到了患病率、安全性和药效证据，以及相对成本效益。
The medicines included in the WHO Model List of Essential Medicines are selected with regard to disease prevalence, evidence of safety and efficacy, and comparative cost-effectiveness.
没有药物能治愈它，也没有药物对此有长期疗效。 那些提升大脑关键化学成分的药物不是对每个人都适用，而且它们的药效也会随着时间流逝而减弱。
There is no cure and existing drugs, which raise levels of key brain chemicals, do not work for everyone and their effects wear off over time.
塔伯曼医生说，“我们给他们开一些药效非常强的药剂和免疫抑制剂来抑制排异反应。”
Teperman said. "we give them very strong, high-powered medications, immunosuppressants, to prevent rejection."
越来越多的证据表明，一些动物之所以寻找一些特殊的植物，也是为了这些植物的药效。
There's increasing evidence that some animals seek out specific plants for their medicinal qualities.
它的药效不像安眠药那么强，但可以直接作用于你的生物钟，把它调到睡眠档。
It's not as strong as a sleeping pill, but it directly affects your body's internal clock and nudges it toward sleep.
目的研究妇科千金软胶囊的主要药效作用。
Objective To investigate the main therapeutic effects of Fuke Qianjin Soft Capsule (FQSC).
在第一次服用后的数周内，通过阻止肿瘤形成内部所需的蛋白质，药效似乎有所显现。
Within weeks of the first dose, it appeared to work, by preventing tumors from making proteins they need to survive.
越来越多的心理学家质疑医生和医药公司是否太急于用药效显著但是可能对人体有害的药物来医治忧郁症。
A growing number of psychiatrists are questioning whether doctors and drug companies are too keen to treat the condition with powerful and potentially harmful drugs.
“听说你有一种药效神奇无可比拟的药物，”艾伦问道，“这是真的吗？”
"Is it true, " asked Alan, "that you have a certain mixture that has-er-quite extraordinary effects?"
抗疟药效力方面的任何变化应促使适当修订一国的治疗政策。
Any change in efficacy of antimalarial drugs should prompt an appropriate update in a country's treatment policy.
通常当一个病人初始用药效果不好时，医生就会给他增加用药，但是这对于那些已经有其他健康问题，已经在用10至15种药的人是不可行的。
Often when a patient doesn’t respond to the first drug, an additional drug is given, but that’s not always practical for patients who are already taking 10 or 15 drugs for other health problems.
我们的最终目标是利用一系列相互关联的方法使我们最大化药效并减少其危害。
Our ultimate aim is to use a number of inter-related methods to allow us to maximise the benefits of medicines and minimise the harm.
草本植物的医药效用数不胜数。
草本植物的医药效用数不胜数。
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