Well, Aspirin is once again an Irreversible inhibitor that binds until special enzyme known as cycloxycloxygenase. So Aspirin binds until cycloxygenase, and it prevents that molecule from essentially stimulating the process of inflammation. And so that decreases pain, it basically makes headaches go away and so forth. And each one of these are Irreversible inhibitors that modify the enzyme by binding covalently to that enzyme. Now let's move on to reversible inhibitors. So in reversible inhibition, we have these inhibitors that bind onto the enzyme, but they bind relatively weakly, and that means reversibly.