Ephedrine is something you can buy, but clenbuterol isn't. Ephedrine is safe for most people it's the E in ECA which is the combination found in most thermogenics you buy. Clenbuterol isn't legal in the US and isn't even prescribed as a treatment for asthma anymore like it used to be. In any event, if you take Clen or Ephedrine, I wouldn't take them together. You would run the risk of getting your blood pressure very high by stacking those two. That's my opinion.