I would go with Albuterol instead of clen. It is much safer. Even had studies done on obese kids taking it with caffeine and they lost a huge amount more compared to placebo. This is just my opinion but it also has shorter half life and makes it easier to sleep on. Also be careful if you buy liquid as a buddy took a whole ml and had to go to hospital as he thought it was one dose and it ended up being like 10.