Hi. Welcome to our community. Glad to see that you are already participating here in the forums. And thank you for starting this discussion. It will be neat hearing what other community members have to say about this. In the meantime, I do have something to add. Fostair is a combination inhaler that contains both the corticosteroid beclomethasone and the long acting beta agonist formoterol. And lubforbec is a generic inhaler that contains the same medications. So, witching from one to the other should not pose a problem as they both contain the same medications. That said, how well any new inhaler works, whether a brand name or generic, may vary from person to person. Is switching to lubforbec something you are thinking of talking to your doctor about? John. community moderator.