When using bai guo for asthma therapy, the effective dosage is very close to toxic quantity.

当使用白果对哮喘的治疗中，有效剂量是非常接近有毒的剂量。

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The product synthesized in laboratory was proved to have the advantages of high strengthening effect and low effective dosage.

通过探索性实验，所合成出来的产品具有用量少，增强效果好等特点。

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Conclusion: This design method can provide a safe and effective dosage for clinical administration and can evaluate a dosage regimen.

结论：设计方法简单，使用方便，既能为临床用药提供安全有效的剂量，又能对某一用药方案作出评价。

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Doctors admit they have reached the limits of effective dosage with chemotherapy.

ECONOMIST: Children and cancer

In other words, the drug's dosage was too high, and further study might show it to be more effective than previously thought.

FORBES: Pharmaceuticals