Zyflo (zileuton) is so expensive, but effective, for me. is there a more affordable alternative?

Yes, maybe . . .: Zyflo & zyflo cr are brands of zileuton, which is a leukotriene inhibitor. Montelukast & zafirlukast are also leukotriene inhibitors that are available as generic. Ask your prescribing physician if one of these might serve as a less expensive alternative. I've also compiled a page of low cost, even free, medical care & pharmaceutical options at http://bit.Ly/nunxzc (my website).