Clen will help to preserve muscle during a cut, although only slightly. I would still recommend running clen along side some sort of anabolic. That being said Clen can effect certain people cardio negatively depending on cramping, shortness of breath, etc... If you looking to cut "faster" than clen would be superior to albuterol. However, many people albuterol has its benifits as well such as increased cardio performance, little to know cramping, not a huge increase in HR when compared to clen. So its really up to you as to which one to choose depending on your goals and how long of a cut you are looking to do.