Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a simvastatin stimulus. Simvastatin is a statin used as a cholesterol-lowering and anti-cardiovascular disease drug.
Note that this term is in the subset of terms that should not be used for direct manual annotation of gene products. It was created to be used for cross-referencing by other ontologies. Direct annotations to this term may be amended during annotation QC.