My son takes a medication that is specific
WITH food and also another that says you pick
with food or without food, but stay consistent with it. I think Coreg, from my reading, is food optional but the recommendation is that with food is better because it slows the rate of absorption. This is to prevent orthostatic hypotension (this is when bp drops and you get dizzy when you stand up). If you aren't having that problem by not taking it with food, then may not be a worry for you.