Definition of Efficacy

the power to produce a desired effect

Examples of Efficacy in a sentence

Fortunately, the medicine had the efficacy to reduce the amount of pain John was feeling.  🔊

Since the traffic reports have not been announced yet, the efficacy of the new drunk driving laws cannot be confirmed.  🔊

The instructor’s efficacy was reduced by the lack of educational materials.  🔊

Even after conducting the study, the scientist was not able to prove the cancer drug’s efficacy.  🔊

If you drink alcohol while taking an antibiotic, you might reduce the strength of the medication and lower the drug’s efficacy.  🔊

The two child psychologists spent hours debating the efficacy of spanking upon behavior.  🔊

Reform critics question the efficacy of juvenile prisons in deterring youth crime.  🔊

Since I have never practiced yoga, I cannot speak on its efficacy to provide relaxation.  🔊

In order to test the efficacy of its new security system, the bank staged a fake robbery.  🔊

Becasue the drug is new and untried on humans, volunteers are being recruited to test its efficacy.  🔊

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