1. In A-HeFT trial, you showed a combination of isosorbide dinitrate with hydralazine achieved a better survival rate than placebo in African American population.

2. : an organism that Acetylates a substance during metabolism — used especially to describe the rate at which a person Acetylates certain drugs (such as isoniazid, hydralazine, or sulfamethazine) in the body People known as slow acetylators, for instance, take a longer time than fast acetylators to clear certain drugs from the liver.