efficacious in a sentence

Definition

Efficacious means having the power to produce a desired effect or result; effective.

The new medication proved to be efficacious in reducing symptoms of the disease.
Her efficacious teaching methods significantly improved student engagement and understanding.
The research study demonstrated that the treatment was not only safe but also efficacious.
Many people are skeptical about alternative therapies, yet some can be surprisingly efficacious.
In clinical trials, the vaccine was found to be highly efficacious against the virus.