Good evening everyone. I'm just blown away from the comments on this message board. I've been taking Lisinopril since Thursday and I've been tired and feeling like nausea just today. I've noticed how tired I am too. I was walking this morning; about a 3 mile walk and it was hard for me to finish up. I'm a 39 year old African American male, very active as well. So, when this happened, I wanted to check out the side effects of this medicine to see if I'm the only one......I plan to consult with my Dr, to change as well; excuse I just vomited. I will be changing ASAP. Have a bless day./