How long does it take for lisinopril to work?

Lisinopril: Lisinopril is used for many things. For blood pressure changes can be seen in a week or so. For heart failure and other uses it can take 6 weeks or more to see changes.

lisinopril: Initial venodilation and weak arteriolar dilation begins with the first few doses. BP changes may take a week or so and changes beneficial to CHF begin to be see after 6 weeks.