What is another word for efficaciousness?

Need synonyms for efficaciousness? Here's a list of similar words from our thesaurus that you can use instead.

Quality of being efficacious
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“Clinicians simply avoided them because accepted theories of disease mechanism and drug action offered no explanation for their efficaciousness.”
The power of something to influence or make an impression
A quality considered good morally, or that gives something special worth
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The achievement of an aim or goal
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