I think you need the c, I want to say I read on hotnfit they work together. Without the caffeine the ephedra doesn't help with fat loss. I would just time your coffe with the doses of primatene in your case. You don't need the a, but I would add some fish oil to help with blood pressure. When I use ec, I use Bronkaid and replace one of the caffeine servings with one of my preworkouts.