Is ACE inhibitor such as captropil effective as an antihypertensive or everyone?

1size never fits all. In medicine, one size doesn't fit all. An ace inhibitor may be more appropriate if you have diabetes, since it can protect the kidneys from diabetic damage. If you have cardiac problems, a beta blocker may be more appropriate. Sometimes, a pt needs to use more than one HTN medication. This is why you & your doctor should discuss which blood pressure med is best in your p[articular case.