People do say that clen is more effective. With that said, the sides are also supposed to be worse. Along these lines, I believe that the potential for heart problems is greater with clen than with albuterol. I have only used albuterol so I can't really compare the two, but you should dose the albuterol at least three times a day due to the short half life. It worked decently, and the sides were very mild, I only experienced mild shakes. Also, believe that you can run albuterol for a longer period than clen before it loses its effectiveness.