I just got some albuterol from ag guys today and started this morning, this stuff kicks ass!!! My lab rats have a lot of energy and ran for an hour and a half earlier and really didn't get tired!!! Granted My lab rats have never tried clen before, but this stuff is great!!! The only thing is a bottle will only last 10 days or so, and it's just for pre cycle fat cutting, so I was going to try it for 20 days, but just got one bottle!!! Anyway, I really like the liquid that the AG guys have compared to the tablets, this is a top notch company!!!