Anything has the potential to be "harsh". Not regulating your BP can be "harsh".
I have used Captropril (ACE inhibitor) for over a year now, 50MG ed, and my BP is smooth and clean. I don't have any sides. I still have residual Clonidine, but I rarely use it, it puts me to sleep. I drink about a gallon of water per day, never had any kidney issues.
Why are you pushing "Atacand"?
I was concerned about the sides with the ace, but seems that you are doing pretty good on them. My doc recommended it to me. He knows everything I do.