Heart medications..?

Question

How do heart medications work? Are the ones that help "make your heart stronger" almost steroids for your heart? They just make the muscle stronger?

Answer 1

There's way too many different types of "heart" medications in various drug classes, e.g. anti-arrhythmics, positive-inotropes, negative inotropes, etc.  And they all work very differently and are rather complex.  For a serious discussion, you'd be best served by consulting an authoritative text, e.g. Goodman & Gilman as it pertains to cardiac pharmacology.